CVE-2005-3393
CVSS7.5
发布时间 :2005-11-01 07:47:00
修订时间 :2016-10-17 23:35:09
NMCOP    

[原文]Format string vulnerability in the foreign_option function in options.c for OpenVPN 2.0.x allows remote clients to execute arbitrary code via format string specifiers in a push of the dhcp-option command option.


[CNNVD]OpenVPN客户端远程格式串处理漏洞(CNNVD-200511-041)

        OpenVPN是一个基于OpenSSL库的应用层VPN实现。
        OpenVPN中存在远程格式串处理漏洞,远程攻击者可能利用此漏洞在主机上执行任意指令。恶意的服务器可以向客户端发送包含有格式标识符的特制命令选项,如dhcp-option,导致执行任意代码。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
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)

cpe:/a:openvpn:openvpn:2.0.1
cpe:/a:openvpn:openvpn:2.0.2
cpe:/a:openvpn:openvpn:2.0
cpe:/a:openvpn:openvpn:2.0_beta11

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3393
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-3393
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200511-041
(官方数据源) CNNVD

- 其它链接及资源

http://marc.info/?l=bugtraq&m=113081023121059&w=2
(UNKNOWN)  BUGTRAQ  20051031 OpenVPN[v2.0.x]: foreign_option() formart string vulnerability.
http://openvpn.net/changelog.html
(UNKNOWN)  CONFIRM  http://openvpn.net/changelog.html
http://www.debian.org/security/2005/dsa-885
(UNKNOWN)  DEBIAN  DSA-885
http://www.gentoo.org/security/en/glsa/glsa-200511-07.xml
(UNKNOWN)  GENTOO  GLSA-200511-07
http://www.novell.com/linux/security/advisories/2005_25_sr.html
(UNKNOWN)  SUSE  SUSE-SR:2005:025
http://www.securityfocus.com/archive/1/archive/1/415487
(UNKNOWN)  OPENPKG  OpenPKG-SA-2005.023
http://www.securityfocus.com/bid/15239
(PATCH)  BID  15239
http://www.vupen.com/english/advisories/2005/2255
(UNKNOWN)  VUPEN  ADV-2005-2255

- 漏洞信息

OpenVPN客户端远程格式串处理漏洞
高危 格式化字符串
2005-11-01 00:00:00 2005-11-15 00:00:00
远程  
        OpenVPN是一个基于OpenSSL库的应用层VPN实现。
        OpenVPN中存在远程格式串处理漏洞,远程攻击者可能利用此漏洞在主机上执行任意指令。恶意的服务器可以向客户端发送包含有格式标识符的特制命令选项,如dhcp-option,导致执行任意代码。

- 公告与补丁

        目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商的主页以获取最新版本:
        http://openvpn.net/

- 漏洞信息 (F41387)

Debian Linux Security Advisory 885-1 (PacketStormID:F41387)
2005-11-08 00:00:00
Debian  security.debian.org
advisory,vulnerability
linux,debian
CVE-2005-3393
[点击下载]

Debian Security Advisory DSA 885-1 - Several vulnerabilities have been discovered in OpenVPN, a free virtual private network daemon.

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

- --------------------------------------------------------------------------
Debian Security Advisory DSA 885-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
November 7th, 2005                      http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : openvpn
Vulnerability  : several
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2005-3393 CVE-2005-3409
CERT advisory  : 
BugTraq ID     : 15239
Debian Bug     : 336751 337334

Several vulnerabilities have been discovered in OpenVPN, a free
virtual private network daemon.  The Common Vulnerabilities and
Exposures project identifies the following problems:

CVE-2005-3393

    A format string vulnerability has been discovered that could allow
    arbitrary code to be executed on the client.

CVE-2005-3409

    A NULL pointer dereferencing has been discovered that could be
    exploited to crash the service.

The old stable distribution (woody) does not contain openvpn packages.

For the stable distribution (sarge) these problems have been fixed in
version 2.0-1sarge2.

For the unstable distribution (sid) these problems have been fixed in
version 2.0.5-1.

We recommend that you upgrade your openvpn package.


Upgrade Instructions
- --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.1 alias sarge
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2.dsc
      Size/MD5 checksum:      629 1cea04a008a9b888b404c7ec2e5c2ef2
    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2.diff.gz
      Size/MD5 checksum:    52800 a48a32ae512664fa21ac2f18b13aca8b
    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0.orig.tar.gz
      Size/MD5 checksum:   639201 7401faebc6baee9add32608709c54eec

  Alpha architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_alpha.deb
      Size/MD5 checksum:   347438 9dcec8dd6cdf3efcaea58097a526d95d

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_amd64.deb
      Size/MD5 checksum:   316598 34e437c2b5c671a0945e23dc314c7d61

  ARM architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_arm.deb
      Size/MD5 checksum:   296726 7eb2f74d7f6334aa864638b18261e6ed

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_i386.deb
      Size/MD5 checksum:   302630 b48bfb10468d6177ca5825382a5b9f3a

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_ia64.deb
      Size/MD5 checksum:   395760 ca6d5c797d96fccf4ff785406bc9cd8c

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_hppa.deb
      Size/MD5 checksum:   316894 d8a83c52f67b478a7ac2481411b4850c

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_m68k.deb
      Size/MD5 checksum:   276658 fb776634c4805ce5b3c98b34c244b8b8

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_mips.deb
      Size/MD5 checksum:   317832 400f6f80ece6d8937aca0500a47aaba8

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_mipsel.deb
      Size/MD5 checksum:   319656 ea3d192a110f8231ac4146490cd4ab46

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_powerpc.deb
      Size/MD5 checksum:   309090 8baabfbe69032a23414ca0e97caec7b9

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_s390.deb
      Size/MD5 checksum:   307492 c63d7c1f5ac2f469ecfdee8673da39d4

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge2_sparc.deb
      Size/MD5 checksum:   295050 913b178ac53ea6676600200c95be4f46


  These files will probably be moved into the stable distribution on
  its next update.

- ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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- 漏洞信息

20415
OpenVPN Client foreign_option() Function Format String
Remote / Network Access, Local / Remote, Context Dependent Input Manipulation
Loss of Integrity
Exploit Unknown Vendor Verified

- 漏洞描述

OpenVPN Client contains a flaw that may allow a malicious server to perform a format string attack. The issue is triggered when using a specific value in the 'dhcp-option' parameter on a server. It is possible that the flaw may allow arbitrary code execution resulting in a loss of integrity.

- 时间线

2005-10-31 Unknow
Unknow Unknow

- 解决方案

Upgrade to version 2.0.4 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者

 

 

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