发布时间 :2006-07-06 16:05:00
修订时间 :2011-03-07 21:38:29

[原文]Algorithmic complexity vulnerability in Hiki Wiki 0.6.0 through 0.6.5 and 0.8.0 through 0.8.5 allows remote attackers to cause a denial of service (CPU consumption) by performing a diff between large, crafted pages that trigger the worst case.

[CNNVD]Hiki Diff拒绝服务漏洞(CNNVD-200607-090)

        Hiki Wiki 0.6.0到0.6.5和0.8.0到0.8.5存在算法复杂性漏洞。远程攻击者可以通过在可触发最坏情况的,大的特制页面之间执行diff,来造成拒绝服务(CPU损耗)。

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
机密性影响: NONE [对系统的机密性无影响]
完整性影响: NONE [不会对系统完整性产生影响]
可用性影响: PARTIAL [可能会导致性能下降或中断资源访问]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: [--]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)


- OVAL (用于检测的技术细节)


- 官方数据库链接
(官方数据源) MITRE
(官方数据源) NVD
(官方数据源) CNNVD

- 其它链接及资源
(UNKNOWN)  XF  hiki-diff-dos(27507)
(UNKNOWN)  VUPEN  ADV-2006-2643
(UNKNOWN)  BID  18785
(UNKNOWN)  JVN  JVN#98836916

- 漏洞信息

Hiki Diff拒绝服务漏洞
中危 其他
2006-07-06 00:00:00 2006-07-20 00:00:00
        Hiki Wiki 0.6.0到0.6.5和0.8.0到0.8.5存在算法复杂性漏洞。远程攻击者可以通过在可触发最坏情况的,大的特制页面之间执行diff,来造成拒绝服务(CPU损耗)。

- 公告与补丁

        Hiki Hiki 0.6.5
        Debian hiki_0.6.5-2_all.deb
        Debian GNU/Linux 3.1 alias sarge

- 漏洞信息 (F48486)

Debian Linux Security Advisory 1119-1 (PacketStormID:F48486)
2006-07-24 00:00:00
advisory,remote,denial of service,ruby

Debian Security Advisory 1119-1 - Akira Tanaka discovered a vulnerability in Hiki Wiki, a Wiki engine written in Ruby that allows remote attackers to cause a denial of service via high CPU consumption using by performing a diff between large and specially crafted Wiki pages.

Hash: SHA1

- --------------------------------------------------------------------------
Debian Security Advisory DSA 1119-1                                       Martin Schulze
July 22nd, 2006               
- --------------------------------------------------------------------------

Package        : hiki
Vulnerability  : design flaw
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2006-3379
BugTraq ID     : 18785
Debian Bug     : 378059

Akira Tanaka discovered a vulnerability in Hiki Wiki, a Wiki engine
written in Ruby that allows remote attackers to cause a denial of
service via high CPU consumption using by performing a diff between
large and specially crafted Wiki pages.

For the stable distribution (sarge) this problem has been fixed in
version 0.6.5-2.

For the unstable distribution (sid) this problem has been fixed in
version 0.8.6-1.

We recommend that you upgrade your hiki 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 at the end of this advisory:

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:
      Size/MD5 checksum:      561 fa72e16d4c5eb8108ccd603b3396bd76
      Size/MD5 checksum:     1573 46c81d7c9e5f52115df2fd91b6cc0bf4
      Size/MD5 checksum:   143468 11c97fe604d70fc42f6c198ec64018e9

  Architecture independent components:
      Size/MD5 checksum:   108780 b1e689405cc70854ad77f5be95a86606

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

- ---------------------------------------------------------------------------------
For apt-get: deb stable/updates main
For dpkg-ftp: dists/stable/updates/main
Mailing list:
Package info: `apt-cache show <pkg>' and<pkg>

Version: GnuPG v1.4.3 (GNU/Linux)



- 漏洞信息

Hiki Diff Generation Process Consumption DoS
Remote / Network Access Denial of Service
Loss of Availability
Exploit Public Vendor Verified

- 漏洞描述

Hiki contains a flaw that may allow a remote denial of service. The issue is triggered when a diff between two large pages occurs, and will result in loss of availability for the platform.

- 时间线

2006-07-03 Unknow
2006-07-03 Unknow

- 解决方案

Upgrade to version 0.8.6 or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround: Configure the @timeout variable in hikiconf.rb to be lower than the default setting (30)

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

Hiki Diff Denial Of Service Vulnerability
Failure to Handle Exceptional Conditions 18785
Yes No
2006-07-03 12:00:00 2006-07-27 08:57:00
This issue was reported by the vendor.

- 受影响的程序版本

Hiki Hiki 0.8.5
Hiki Hiki 0.8.4
Hiki Hiki 0.8.3
Hiki Hiki 0.8.2
Hiki Hiki 0.8.1
Hiki Hiki 0.8
Hiki Hiki 0.6.5
Hiki Hiki 0.6.4
Hiki Hiki 0.6.3
Hiki Hiki 0.6.2
Hiki Hiki 0.6.1
Hiki Hiki 0.6
FreeStyle Wiki Wiki 3.5.9
FreeStyle Wiki Wiki 3.5.8
FreeStyle Wiki Wiki 3.5.7
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Hiki Hiki 0.8.6
FreeStyle Wiki Wiki 3.6.2

- 不受影响的程序版本

Hiki Hiki 0.8.6
FreeStyle Wiki Wiki 3.6.2

- 漏洞讨论

Hiki is prone to a denial-of-service vulnerability because of an error when processing a comparison between two pages.

An attacker can exploit this vulnerability to cause the application to stop responding due to excessive use of system resources, denying service to legitimate users.

- 漏洞利用

Attackers can exploit this vulnerability via a web browser.

- 解决方案

The vendor has released version 0.8.6 to address this issue.

See the references for vendor advisories.

Hiki Hiki 0.6.5

- 相关参考