CVE-2001-0328
CVSS5.0
发布时间 :2001-06-27 00:00:00
修订时间 :2016-11-28 14:06:15
NMCPS    

[原文]TCP implementations that use random increments for initial sequence numbers (ISN) can allow remote attackers to perform session hijacking or disruption by injecting a flood of packets with a range of ISN values, one of which may match the expected ISN.


[CNNVD]多个供应商TCP最初序列号统计漏洞(CNNVD-200106-174)

        TCP安装启用对最初序列号(ISN)使用随机增量。远程攻击者通过注入一大批带一系列ISN值的数据包执行会话劫持或者破坏,而其中之一可能与期望的ISN匹配。

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
机密性影响: [--]
完整性影响: [--]
可用性影响: [--]
攻击复杂度: [--]
攻击向量: [--]
身份认证: [--]

- CPE (受影响的平台与产品)

产品及版本信息(CPE)暂不可用

- OVAL (用于检测的技术细节)

oval:org.mitre.oval:def:4922Multiple Vendor TCP/IP stack Weak Initial Sequence Number Vulnerability
*OVAL详细的描述了检测该漏洞的方法,你可以从相关的OVAL定义中找到更多检测该漏洞的技术细节。

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0328
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2001-0328
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200106-174
(官方数据源) CNNVD

- 其它链接及资源

ftp://patches.sgi.com/support/free/security/advisories/20030201-01-P
(UNKNOWN)  SGI  20030201-01-P
http://securityreason.com/securityalert/57
(UNKNOWN)  SREASON  57
http://www.cert.org/advisories/CA-2001-09.html
(VENDOR_ADVISORY)  CERT  CA-2001-09
http://www.securityfocus.com/bid/2682
(UNKNOWN)  BID  2682

- 漏洞信息

多个供应商TCP最初序列号统计漏洞
中危 设计错误
2001-06-27 00:00:00 2009-03-04 00:00:00
远程※本地  
        TCP安装启用对最初序列号(ISN)使用随机增量。远程攻击者通过注入一大批带一系列ISN值的数据包执行会话劫持或者破坏,而其中之一可能与期望的ISN匹配。

- 公告与补丁

        Under Solaris 7, it has been suggested that the feasibility of this attack is eliminated by setting "tcp_strong_iss=2".
        SGI has suggests the tcpiss_md5 kernel parameter may eliminate this vulnerability. Details are available in the SGI advisory 20020303-01-A listed as a reference. This parameter is disabled by default.
        SGI has released a second advisory for this issue which contains fixes for the IRIX operating system. Users are advised to upgrade their systems as soon as possible.
        Users of HP-UX 11.0 may install patch PHNE_22397 to enable HP randomization of initial sequence numbers.
        Users of HP-UX 11.0, 11.04 and 11.11 may enable RFC 1948 compliant randomization through patches PHNE_26771, PHNE_26101, or PHNE_25644 respectively. Once patched, the following shell command must be executed by root:
        ndd -set /dev/tcp tcp_isn_passphrase
        Where is any length character string. Only the first 32 characters will be retained. If the passphrase is changed the system should be rebooted.
        Several vendors have released kernel patches and upgrades which address this issue:
        Cisco IOS 11.0
        

  •         Cisco IOS 11.0(22a)
            

  •         

        Cisco IOS 11.1 CC
        

  •         Cisco IOS 11.1(36)CC1
            

  •         

        Cisco IOS 11.1 CA
        

  •         Cisco IOS 11.1(36)CA1
            

  •         

        Cisco IOS 11.1
        

  •         Cisco IOS 11.1(24a)
            

  •         

        Cisco IOS 11.2 P
        

  •         Cisco IOS 11.2(25a)P
            

  •         

        Cisco IOS 11.2
        

  •         Cisco IOS 11.2(25a)
            

  •         

        Cisco IOS 11.2 GS
        

  •         Cisco IOS 12.0(15)S1
            

  •         

        Cisco IOS 11.3
        

  •         Cisco IOS 11.3(11b)
            

  •         

        Cisco IOS 11.3 NA
        

  •         Cisco IOS 12.1(7)
            

  •         

        Cisco IOS 11.3 AA
        

  •         Cisco IOS 11.3(11a)AA
            

  •         

        Cisco IOS 11.3 (2)XA
        

  •         Cisco IOS 11.3(11b)T1
            

  •         

        Cisco IOS 12.0 SC
        

  •         Cisco IOS 12.0(15)SC1
            

  •         

        Cisco IOS 12.0 XA
        

  •         Cisco IOS 12.1(7)
            

  •         

        Cisco IOS 12.0 XB
        

  •         Cisco IOS 12.1(7)
            

  •         

        Cisco IOS 12.0 XG
        

  •         Cisco IOS 12.1(7)
            

  •         

        Cisco IOS 12.0 XS
        

  •         Cisco IOS 12.1(5c)E8
            

  •         

        Cisco IOS 12.0 XK
        

  •         Cisco IOS 12.0(7)XK4
            

  •         

        Cisco IOS 12.0 XH
        

  •         Cisco IOS 12.0(4)XH5
            

  •         

        Cisco IOS 12.0 DC
        

  •         Cisco IOS 12.1(4)DC2
            

  •         

        Cisco IOS 12.0 T
        

  •         Cisco IOS 12.1(7)
            

  •         

        
        Cisco IOS 12.1 XQ
        

  •         Cisco IOS 12.1(3)XQ1
            

  •         

        Cisco IOS 12.1 XJ
        

  •         Cisco IOS 12.1(5)YB
            

  •         

        Cisco IOS 12.1 XI
        

  •         Cisco IOS 12.1(3)XI6
            

  •         

        Cisco IOS 12.1 XS
        

  •         Cisco IOS 12.1(5c)EX
            

  •         

        Cisco IOS 12.1 XV
        

  •         Cisco IOS 12.1(5)XV1
            

  •         

        Cisco IOS 12.1 YD
        

  •         Cisco IOS 12.1(5)YD
            

  •         

        Cisco IOS 12.1 XX
        

  •         Cisco IOS 12.1(5)XX3
            

  •         

        Cisco IOS 12.1 XM
        

  •         Cisco IOS 12.0(5)XM1
            

  •         

        Cisco IOS 12.1 XY
        

  •         Cisco IOS 12.1(5)XY4
            

  •         

        Cisco IOS 12.1 XL
        

  •         Cisco IOS 12.1(3)XL1
            

  •         

        Cisco IOS 12.1 XT
        

  •         Cisco IOS 12.1(3)XT1
            

  •         

        Cisco IOS 12.1 YA
        

  •         Cisco IOS 12.1(5)YA1
            

  •         

        Cisco IOS 12.1 YB
        

  •         Cisco IOS 12.1(5)YB
            

  •         

        Cisco IOS 12.1 XG
        

  •         Cisco IOS 12.1(3)XG3
            

  •         

        
        FreeBSD FreeBSD 3.5 -STABLEpre050201
        
        
        
        
        SGI IRIX 6.5.14 f
        
        SGI IRIX 6.5.14 m
        

- 漏洞信息 (F38762)

SSRT4743-SSRT4884.txt (PacketStormID:F38762)
2005-07-19 00:00:00
 
advisory,remote,denial of service,spoof,tcp,vulnerability
unix
CVE-2004-0790,CVE-2004-0791,CVE-2004-1060,CVE-2001-0328
[点击下载]

HP Security Bulletin - Several potential security vulnerabilities have been identified in the HP Tru64 UNIX TCP/IP including ICMP, and Initial Sequence Number generation (ISNs). These exploits could result in a remote Denial of Service (DoS) from network throughput reduction for TCP connections, the reset of TCP connections, or TCP spoofing.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

HP SECURITY BULLETIN

HPSBTU01210     REVISION: 0

SSRT4743, SSRT4884 rev.0 - HP Tru64 UNIX TCP/IP remote Denial of
                           Service (DoS)

NOTICE:
There are no restrictions for distribution of this Security
Bulletin provided that it remains complete and intact.

The information in this Security Bulletin should be acted upon
as soon as possible.

INITIAL RELEASE:
15 July 2005

POTENTIAL SECURITY IMPACT:
Remote Denial of Service (DoS)

SOURCE:
Hewlett-Packard Company
HP Software Security Response Team

VULNERABILITY SUMMARY:
Several potential security vulnerabilities have been identified
in the HP Tru64 UNIX TCP/IP including ICMP, and Initial Sequence
Number generation (ISNs). These exploits could result in a remote
Denial of Service (DoS) from network throughput reduction for
TCP connections, the reset of TCP connections, or TCP spoofing.

REFERENCES:
CERT CA-2001-09, NISCC Vulnerability Advisory VU#498440 VU#532967,
CAN-2004-0790 CAN-2004-0791 CAN-2004-1060 CAN-2001-0328

SUPPORTED SOFTWARE VERSIONS*:  ONLY impacted versions are listed.
HP Tru64 UNIX 5.1B-3
HP Tru64 UNIX 5.1B-2/PK4
HP Tru64 UNIX 5.1A PK
HP Tru64 UNIX 4.0G PK4
HP Tru64 UNIX 4.0F PK8

BACKGROUND:

Special Instructions for the Customer

The Internet Control Message Protocol (ICMP) (RFC 792) is used in
the Internet Architecture to perform fault-isolation and recovery
(RFC816), which is the group of actions that hosts and routers
take to determine if a network failure has occurred.

The industry standard TCP specification (RFC 793) has a
vulnerability whereby ICMP packets can be used to perform a
variety of attacks such as blind connection reset attacks and
blind throughput-reduction attacks. Blind connection reset
attacks can be triggered by an attacker sending forged ICMP
"Destination Unreachable, host unreachable" packets or ICMP
"Destination Unreachable, port unreachable" packets.  Blind
throughput-reduction attacks can be caused by an attacker sending
a forged ICMP type 4 (Source Quench) packet.

Path MTU Discovery (RFC 1191) describes a technique for
dynamically discovering the MTU (maximum transmission unit) of an
arbitrary internet path.  This protocol uses ICMP packets from
the router to discover the MTU for a TCP connection path.  An
attacker can reduce the throughput of a TCP connection by sending
forged ICMP packets (or their IPv6 counterpart) to the
discovering host, causing an incorrect Path MTU setting.

HP has addressed these potential vulnerabilities by providing a
new kernel tunable in Tru64 UNIX V5.1B and 5.1A,
icmp_tcpseqcheck. In Tru64 4.0F and 4.0G, HP has introduced two
new kernel tunables, icmp_tcpseqcheck and icmp_rejectcodemask.
The icmp_rejectcodemask tunable is already available in Tru64
UNIX V5.1B and 5.1A.

icmp_tcpseqcheck

The icmp_tcpseqcheck variable mitigates ICMP attacks against TCP
by checking that the TCP sequence number contained in the payload
of the ICMP error message is within the range of the data already
sent but not yet acknowledged. An ICMP error message that does
not pass this check is discarded. This behavior protects TCP
against spoofed ICMP packets.

Set the tunable as follows:

  icmp_tcpseqcheck=1 (default)

    Provides a level of protection that reduces the possibility
    of considering a spoofed ICMP packet as valid
    to one in two raised to the thirty-second power.

  icmp_tcpseqcheck=0

    Retains existing behavior, i.e., accepts all ICMP packets

icmp_rejectcodemask

In the Requirements for IP Version 4 Routers (RFC 1812), research
suggests that the use of ICMP Source Quench packets is an
ineffective (and unfair) antidote for congestion. Thus, HP
recommends completely ignoring ICMP Source Quench packets using
the icmp_rejectcodemask tunable. The icmp_rejectcodemask is a
bitmask that designates the ICMP codes that the system should
reject. For example, to reject ICMP Source Quench packets,
set the mask bit position for the ICMP_SOURCEQUENCH code 4,
which is two to the 4th power = 16 (0x10 hex).
The icmp_rejectcodemask tunable can be used to reject any
ICMP packet type, or multiple masks can be combined to reject
more than one type.

Note: the ICMP type codes are defined in
      "/usr/include/netinet/ip_icmp.h".

  Set the tunable as follows:

    icmp_rejectcodemask = 0x10

      Rejects ICMP Source Quench packets

    icmp_rejectcodemask = 0 (default)

      Retains existing behavior, i.e., accepts all ICMP packets

Adjusting the variables

The ICMP sequence check variable (icmp_tcpseqcheck) can be
adjusted using the sysconfig and sysconfigdb commands:

# sysconfig -q inet icmp_tcpseqcheck
inet:
icmp_tcpseqcheck = 1
# sysconfig -r inet icmp_tcpseqcheck=0
icmp_tcpseqcheck: reconfigured
# sysconfig -q inet icmp_tcpseqcheck
inet:
icmp_tcpseqcheck = 0
# sysconfig -q inet icmp_tcpseqcheck > /tmp/icmp_tcpseqcheck_merge
# sysconfigdb -m -f /tmp/icmp_tcpseqcheck_merge inet
# sysconfigdb -l inet

inet:
      icmp_tcpseqcheck = 1

Similarly, the icmp_rejectcodemask variable can be adjusted using
the sysconfig and sysconfigdb commands:

# sysconfig -q inet icmp_rejectcodemask
inet:
icmp_rejectcodemask = 0
# sysconfig -r inet icmp_rejectcodemask=0x10
icmp_rejectcodemask: reconfigured
# sysconfig -q inet icmp_rejectcodemask
inet:
icmp_rejectcodemask = 16
# sysconfig -q inet icmp_rejectcodemask
   > /tmp/icmp_rejectcodemask_merge
# sysconfigdb -m -f /tmp/icmp_rejectcodemask_merge inet
# sysconfigdb -l inet

inet:
        icmp_rejectcodemask = 16

RESOLUTION:

Until the corrections are available in a mainstream
release patch kit, HP is releasing the following Early Release
Patch (ERP) kits publicly for use by any customer.

The ERP kits use dupatch to install and will not install over
any installed Customer Specific Patches (CSPs) that have file
intersections with the ERPs. Contact your service provider for
assistance if the ERP installation is blocked by any of your
installed CSPs.

The fixes contained in the ERP kits are scheduled to be
available in the following mainstream patch kits:

    HP Tru64 Unix 5.1B-4

Early Release Patches

The ERPs deliver the following file:

/sys/BINARY/inet.mod

HP Tru64 UNIX 5.1B-3 ERP Kit Name:
   T64KIT0025925-V51BB26-ES-20050628
Kit Location:
  http://www.itrc.hp.com/service/patch/patchDetail.do?
  patchid=T64KIT0025925-V51BB26-ES-20050628
MD5 checksum: 129251787a426320af16cd584b982027

HP Tru64 UNIX 5.1B-2/PK4 ERP Kit Name:
  T64KIT0025924-V51BB25-ES-20050628
Kit Location:
  http://www.itrc.hp.com/service/patch/patchDetail.do?
  patchid=T64KIT0025924-V51BB25-ES-20050628
MD5 checksum: 5fcc77a6876db6d10ef07ac96e11b3af

HP Tru64 UNIX 5.1A PK6 ERP Kit Name:
  T64KIT0025922-V51AB24-ES-20050628
Kit Location:
  http://www.itrc.hp.com/service/patch/patchDetail.do?
  patchid=T64KIT0025922-V51AB24-ES-20050628
MD5 checksum: 7c373b35c95945651a1cfda96bf71421

HP Tru64 UNIX 4.0G PK4 ERP Kit Name:
  T64KIT0025920-V40GB22-ES-20050628
Kit Location:
  http://www.itrc.hp.com/service/patch/patchDetail.do?
  patchid=T64KIT0025920-V40GB22-ES-20050628
MD5 checksum: 13849fd555239d75d300d1cb46dc995f

HP Tru64 UNIX 4.0F PK8 ERP Kit Name:
  DUXKIT0025921-V40FB22-ES-20050628
Kit Location:
  http://www.itrc.hp.com/service/patch/patchDetail.do?
  patchid=T64KIT0025920-V40GB22-ES-20050628
MD5 checksum: 743b614d39f185802701b7f2dd14ffa5

MD5 checksums are available from the ITRC patch database main
page:
   http://www.itrc.hp.com/service/patch/mainPage.do
- From the patch database main page, click Tru64 UNIX,
then click verifying MD5 checksums under useful links.

General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage



SUPPORT: For further information, contact normal HP Services
support channel.

REPORT: To report a potential security vulnerability with any HP
supported product, send Email to: security-alert@hp.com. It is
strongly recommended that security related information being
communicated to HP be encrypted using PGP, especially exploit
information. To obtain the security-alert PGP key please send an
e-mail message to security-alert@hp.com with the Subject of
'get key' (no quotes).

SUBSCRIBE: To initiate a subscription to receive future HP
Security Bulletins via Email:

http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&
langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC

On the web page: ITRC security bulletins and patch sign-up
Under Step1: your IRTC security bulletins and patches
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Under Step2: your IRTC operating systems
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Log in on the web page
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On the Web page:
 Subscriber's Choice: your profile summary
   - use Edit Profile to update appropriate sections.

To review previously published Security Bulletins visit:
http://itrc.hp.com/service/cki/secBullArchive.do

* The Software Product Category that this Security Bulletin
  relates to is represented by the 5th and 6th characters of the
  Bulletin number:
    GN = HP General SW,
    MA = HP Management Agents,
    MI = Misc. 3rd party SW,
    MP = HP MPE/iX,
    NS = HP NonStop Servers,
    OV = HP OpenVMS,
    PI = HP Printing & Imaging,
    ST = HP Storage SW,
    TL = HP Trusted Linux,
    TU = HP Tru64 UNIX,
    UX = HP-UX,
    VV = HP Virtual Vault

System management and security procedures must be reviewed
frequently to maintain system integrity. HP is continually
reviewing and enhancing the security features of software products
to provide customers with current secure solutions.

"HP is broadly distributing this Security Bulletin in order to
bring to the attention of users of the affected HP products the
important security information contained in this Bulletin. HP
recommends that all users determine the applicability of this
information to their individual situations and take appropriate
action. HP does not warrant that this information is necessarily
accurate or complete for all user situations and, consequently, HP
will not be responsible for any damages resulting from user's use
or disregard of the information provided in this Bulletin. To the
extent permitted by law, HP disclaims all warranties, either
express or implied, including the warranties of merchantability
and fitness for a particular purpose, title and non-infringement."


(c)Copyright 2005 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
provided is provided "as is" without warranty of any kind. To the
extent permitted by law, neither HP nor its affiliates,
subcontractors or suppliers will be liable for incidental, special
or consequential damages including downtime cost; lost profits;
damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration.
The information in this document is subject to change without
notice. Hewlett-Packard Company and the names of Hewlett-Packard
products referenced herein are trademarks of Hewlett-Packard
Company in the United States and other countries. Other product
and company names mentioned herein may be trademarks of their
respective owners.

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- 漏洞信息

Multiple Vendor TCP Initial Sequence Number Statistical Vulnerability
Design Error 2682
Yes Yes
2001-03-14 12:00:00 2009-07-11 06:06:00
Originally discovered by Tim Newsham <tim.newsham@guardent.com>.

- 受影响的程序版本

Sun Solaris 7.0
SGI IRIX 6.5.14 m
SGI IRIX 6.5.14 f
SGI IRIX 6.5.14
SGI IRIX 6.5.13 m
SGI IRIX 6.5.13 f
SGI IRIX 6.5.13
SGI IRIX 6.5.12 m
SGI IRIX 6.5.12 f
SGI IRIX 6.5.12
SGI IRIX 6.5.11 m
SGI IRIX 6.5.11 f
SGI IRIX 6.5.11
SGI IRIX 6.5.10 m
SGI IRIX 6.5.10 f
SGI IRIX 6.5.10
SGI IRIX 6.5.9 m
SGI IRIX 6.5.9 f
SGI IRIX 6.5.9
SGI IRIX 6.5.8 m
SGI IRIX 6.5.8 f
SGI IRIX 6.5.8
SGI IRIX 6.5.7 m
SGI IRIX 6.5.7 f
SGI IRIX 6.5.7
SGI IRIX 6.5.6 m
SGI IRIX 6.5.6 f
SGI IRIX 6.5.6
SGI IRIX 6.5.5 m
SGI IRIX 6.5.5 f
SGI IRIX 6.5.5
SGI IRIX 6.5.4 m
SGI IRIX 6.5.4 f
SGI IRIX 6.5.4
SGI IRIX 6.5.3 m
SGI IRIX 6.5.3 f
SGI IRIX 6.5.3
SGI IRIX 6.5.2 m
SGI IRIX 6.5.2 f
SGI IRIX 6.5.2
SGI IRIX 6.5.1
SGI IRIX 6.5
OpenBSD OpenBSD 2.8
Microsoft Windows NT Workstation 4.0 SP6a
Microsoft Windows NT Workstation 4.0 SP6
Microsoft Windows NT Workstation 4.0 SP5
Microsoft Windows NT Workstation 4.0 SP4
Microsoft Windows NT Workstation 4.0 SP3
Microsoft Windows NT Workstation 4.0 SP2
Microsoft Windows NT Workstation 4.0 SP1
Microsoft Windows NT Workstation 4.0
Microsoft Windows NT Terminal Server 4.0 SP6
Microsoft Windows NT Terminal Server 4.0 SP5
Microsoft Windows NT Terminal Server 4.0 SP4
Microsoft Windows NT Terminal Server 4.0 SP3
Microsoft Windows NT Terminal Server 4.0 SP2
Microsoft Windows NT Terminal Server 4.0 SP1
Microsoft Windows NT Terminal Server 4.0
Microsoft Windows NT Server 4.0 SP6a
Microsoft Windows NT Server 4.0 SP6
Microsoft Windows NT Server 4.0 SP5
Microsoft Windows NT Server 4.0 SP4
Microsoft Windows NT Server 4.0 SP3
Microsoft Windows NT Server 4.0 SP2
Microsoft Windows NT Server 4.0 SP1
Microsoft Windows NT Server 4.0
Microsoft Windows NT Enterprise Server 4.0 SP6a
Microsoft Windows NT Enterprise Server 4.0 SP6
Microsoft Windows NT Enterprise Server 4.0 SP5
Microsoft Windows NT Enterprise Server 4.0 SP4
Microsoft Windows NT Enterprise Server 4.0 SP3
Microsoft Windows NT Enterprise Server 4.0 SP2
Microsoft Windows NT Enterprise Server 4.0 SP1
Microsoft Windows NT Enterprise Server 4.0
Microsoft Windows NT 4.0 SP6
+ Microsoft Windows NT Enterprise Server 4.0 SP6
+ Microsoft Windows NT Enterprise Server 4.0 SP6
+ Microsoft Windows NT Server 4.0 SP6
+ Microsoft Windows NT Server 4.0 SP6
+ Microsoft Windows NT Terminal Server 4.0 SP6
+ Microsoft Windows NT Terminal Server 4.0 SP6
+ Microsoft Windows NT Workstation 4.0 SP6
+ Microsoft Windows NT Workstation 4.0 SP6
Microsoft Windows NT 4.0 SP5
Microsoft Windows NT 4.0 SP4
+ Microsoft Windows NT Enterprise Server 4.0 SP4
+ Microsoft Windows NT Enterprise Server 4.0 SP4
+ Microsoft Windows NT Server 4.0 SP4
+ Microsoft Windows NT Server 4.0 SP4
+ Microsoft Windows NT Terminal Server 4.0 SP4
+ Microsoft Windows NT Terminal Server 4.0 SP4
+ Microsoft Windows NT Workstation 4.0 SP4
+ Microsoft Windows NT Workstation 4.0 SP4
Microsoft Windows NT 4.0 SP3
Microsoft Windows NT 4.0 SP2
Microsoft Windows NT 4.0 SP1
Microsoft Windows NT 4.0
+ Microsoft Windows NT Enterprise Server 4.0
+ Microsoft Windows NT Enterprise Server 4.0
+ Microsoft Windows NT Server 4.0
+ Microsoft Windows NT Server 4.0
+ Microsoft Windows NT Terminal Server 4.0
+ Microsoft Windows NT Terminal Server 4.0
+ Microsoft Windows NT Workstation 4.0
+ Microsoft Windows NT Workstation 4.0
Microsoft Windows 98SE
Microsoft Windows 98
Microsoft Windows 95
Linux kernel 2.1 .x
Linux kernel 2.0 .x
IBM AIX 4.3
HP HP-UX 11.11
HP HP-UX 11.0 4
HP HP-UX 11.0
HP HP-UX 10.20
HP HP-UX 10.0
FreeBSD FreeBSD 4.2 -STABLEpre050201
FreeBSD FreeBSD 3.5 -STABLEpre050201
Cisco IOS 12.1YD
Cisco IOS 12.1YC
Cisco IOS 12.1YB
Cisco IOS 12.1YA
Cisco IOS 12.1XZ
Cisco IOS 12.1XY
Cisco IOS 12.1XX
Cisco IOS 12.1XW
Cisco IOS 12.1XV
Cisco IOS 12.1XU
Cisco IOS 12.1XT
Cisco IOS 12.1XS
Cisco IOS 12.1XR
Cisco IOS 12.1XQ
Cisco IOS 12.1XP
Cisco IOS 12.1XM
Cisco IOS 12.1XL
Cisco IOS 12.1XK
Cisco IOS 12.1XJ
Cisco IOS 12.1XI
Cisco IOS 12.1XH
Cisco IOS 12.1XG
Cisco IOS 12.1XF
Cisco IOS 12.1XE
Cisco IOS 12.1XD
Cisco IOS 12.1XC
Cisco IOS 12.1XB
Cisco IOS 12.1XA
Cisco IOS 12.1T
Cisco IOS 12.1EX
Cisco IOS 12.1EC
Cisco IOS 12.1E
Cisco IOS 12.1DC
Cisco IOS 12.1DB
Cisco IOS 12.1DA
Cisco IOS 12.1CX
Cisco IOS 12.1AA
Cisco IOS 12.1
Cisco IOS 12.0XV
Cisco IOS 12.0XU
Cisco IOS 12.0XS
Cisco IOS 12.0XR
Cisco IOS 12.0XQ
Cisco IOS 12.0XP
Cisco IOS 12.0XN
Cisco IOS 12.0XM
Cisco IOS 12.0XL
Cisco IOS 12.0XK
Cisco IOS 12.0XJ
Cisco IOS 12.0XI
Cisco IOS 12.0XH
Cisco IOS 12.0XG
Cisco IOS 12.0XF
Cisco IOS 12.0XE
Cisco IOS 12.0XD
Cisco IOS 12.0XC
Cisco IOS 12.0XB
Cisco IOS 12.0XA
Cisco IOS 12.0WT
Cisco IOS 12.0W5
Cisco IOS 12.0T
Cisco IOS 12.0SX
Cisco IOS 12.0ST
Cisco IOS 12.0SL
Cisco IOS 12.0SC
Cisco IOS 12.0S
Cisco IOS 12.0DC
Cisco IOS 12.0DB
Cisco IOS 12.0DA
Cisco IOS 12.0
Cisco IOS 11.3WA4
Cisco IOS 11.3T
Cisco IOS 11.3NA
Cisco IOS 11.3MA
Cisco IOS 11.3HA
Cisco IOS 11.3DB
Cisco IOS 11.3DA
Cisco IOS 11.3AA
Cisco IOS 11.3(2)XA
Cisco IOS 11.3
Cisco IOS 11.2WA3
Cisco IOS 11.2SA
Cisco IOS 11.2P
Cisco IOS 11.2GS
Cisco IOS 11.2F
Cisco IOS 11.2BC
Cisco IOS 11.2(9)XA
Cisco IOS 11.2(4)XA
Cisco IOS 11.2
Cisco IOS 11.1IA
Cisco IOS 11.1CT
Cisco IOS 11.1CC
Cisco IOS 11.1CA
Cisco IOS 11.1AA
Cisco IOS 11.1
Cisco IOS 11.0
BSDI BSD/OS 4.0
BSDI BSD/OS 3.0
Apple Mac OS X 10.0.2
Apple Mac OS X 10.0.1
Apple Mac OS X 10.0
Apple Mac OS 9 9.1
Apple Mac OS 9 9.0.4
Apple Mac OS 9 9.0
Apple Mac OS 8 8.6
Apple Mac OS 8 8.5
Apple Mac OS 8 8.1
Apple Mac OS 8 8.0
Apple Mac OS 7 7.6.1
Apple Mac OS 7 7.6
Apple Mac OS 7 7.5.3
Apple Mac OS 7 7.5.2
Apple Mac OS 7 7.5.1
Apple Mac OS 7 7.1.2
Apple Mac OS 7 7.1
Apple Mac OS 7 7.0.1
Apple Mac OS 7 7.0
Linux kernel 2.2 .x
+ RedHat Linux 6.2 sparc
+ RedHat Linux 6.2 i386
+ RedHat Linux 6.2 alpha

- 不受影响的程序版本

Linux kernel 2.2 .x
+ RedHat Linux 6.2 sparc
+ RedHat Linux 6.2 i386
+ RedHat Linux 6.2 alpha

- 漏洞讨论

Over the past several years, a variety of attacks against TCP initial sequence number (ISN) generation have been discussed.

A vulnerability exists in some TCP/IP stack implementations that use random increments for initial sequence numbers. Such implementations are vulnerable to statistical attack, which could allow an attacker to predict, within a reasonable range, sequence numbers of future and existing connections.

By predicting a sequence number, several attacks could be performed; an attacker could disrupt or hijack existing connections, or spoof future connections.

- 漏洞利用

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com &lt;mailto:vuldb@securityfocus.com&gt;.

- 解决方案

Under Solaris 7, it has been suggested that the feasibility of this attack is eliminated by setting "tcp_strong_iss=2".

SGI has suggests the tcpiss_md5 kernel parameter may eliminate this vulnerability. Details are available in the SGI advisory 20020303-01-A listed as a reference. This parameter is disabled by default.

SGI has released a second advisory for this issue which contains fixes for the IRIX operating system. Users are advised to upgrade their systems as soon as possible.

Users of HP-UX 11.0 may install patch PHNE_22397 to enable HP randomization of initial sequence numbers.

Users of HP-UX 11.0, 11.04 and 11.11 may enable RFC 1948 compliant randomization through patches PHNE_26771, PHNE_26101, or PHNE_25644 respectively. Once patched, the following shell command must be executed by root:

ndd -set /dev/tcp tcp_isn_passphrase <secret passphrase>

Where <secret passphrase> is any length character string. Only the first 32 characters will be retained. If the passphrase is changed the system should be rebooted.

Several vendors have released kernel patches and upgrades which address this issue:


Cisco IOS 12.0SC
  • Cisco IOS 12.0(15)SC1


Cisco IOS 12.0XA
  • Cisco IOS 12.1(7)


Cisco IOS 12.1XQ
  • Cisco IOS 12.1(3)XQ1


Cisco IOS 12.1XJ
  • Cisco IOS 12.1(5)YB


Cisco IOS 12.1XI
  • Cisco IOS 12.1(3)XI6


Cisco IOS 12.1XS
  • Cisco IOS 12.1(5c)EX


Cisco IOS 12.0XB
  • Cisco IOS 12.1(7)


Cisco IOS 12.1XV
  • Cisco IOS 12.1(5)XV1


Cisco IOS 11.0
  • Cisco IOS 11.0(22a)


Cisco IOS 12.0XG
  • Cisco IOS 12.1(7)


Cisco IOS 12.1YD
  • Cisco IOS 12.1(5)YD


Cisco IOS 12.0XS
  • Cisco IOS 12.1(5c)E8


Cisco IOS 12.1XX
  • Cisco IOS 12.1(5)XX3


Cisco IOS 11.3
  • Cisco IOS 11.3(11b)


Cisco IOS 12.1XM
  • Cisco IOS 12.0(5)XM1


Cisco IOS 12.0XK
  • Cisco IOS 12.0(7)XK4


Cisco IOS 12.1XY
  • Cisco IOS 12.1(5)XY4


Cisco IOS 12.1XL
  • Cisco IOS 12.1(3)XL1


Cisco IOS 12.1XT
  • Cisco IOS 12.1(3)XT1


Cisco IOS 11.1CC
  • Cisco IOS 11.1(36)CC1


Cisco IOS 11.1CA
  • Cisco IOS 11.1(36)CA1


Cisco IOS 11.2P
  • Cisco IOS 11.2(25a)P


Cisco IOS 12.0XH
  • Cisco IOS 12.0(4)XH5


Cisco IOS 12.0DC
  • Cisco IOS 12.1(4)DC2


Cisco IOS 12.0T
  • Cisco IOS 12.1(7)


Cisco IOS 11.3NA
  • Cisco IOS 12.1(7)


Cisco IOS 11.2
  • Cisco IOS 11.2(25a)


Cisco IOS 11.3AA
  • Cisco IOS 11.3(11a)AA


Cisco IOS 12.1YA
  • Cisco IOS 12.1(5)YA1


Cisco IOS 12.1YB
  • Cisco IOS 12.1(5)YB


Cisco IOS 12.1XG
  • Cisco IOS 12.1(3)XG3


Cisco IOS 11.1
  • Cisco IOS 11.1(24a)


Cisco IOS 11.2GS
  • Cisco IOS 12.0(15)S1


Cisco IOS 11.3(2)XA
  • Cisco IOS 11.3(11b)T1


FreeBSD FreeBSD 3.5 -STABLEpre050201

SGI IRIX 6.5.14 f

SGI IRIX 6.5.14 m

- 相关参考

 

 

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