NVD Vulnerability Detail
Search Exploit, PoC
CVE-2011-3639
Summary

The mod_proxy module in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x before 2.2.18, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers by using the HTTP/0.9 protocol with a malformed URI containing an initial @ (at sign) character. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368.

Publication Date Nov. 30, 2011, 1:05 p.m.
Registration Date Jan. 28, 2021, 4:39 p.m.
Last Update Nov. 21, 2024, 10:30 a.m.
CVSS2.0 : MEDIUM
Score 4.3
Vector AV:N/AC:M/Au:N/C:N/I:P/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 中
攻撃前の認証要否(Au) 不要
機密性への影響(C) なし
完全性への影響(I) 低
可用性への影響(A) なし
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:apache:http_server:2.0.42:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.58:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.10:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.47:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.56:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.50:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.27:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.20:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a9:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.35:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.37:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.55:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.44:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.39:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.18:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.25:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.52:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a7:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.21:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.53:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.57:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.51:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.33:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.17:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.63:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.22:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.15:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.41:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.49:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.29:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.26:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a8:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.23:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a2:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.61:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.32:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.34:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a5:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a3:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.38:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.19:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.45:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.40:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.36:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a6:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.46:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.54:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.43:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.59:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.14:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.28:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.31:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a1:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.30:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.13:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.16:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.48:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.24:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server2.0a4:*:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Apache HTTP Server の mod_proxy モジュールにおけるイントラネットサーバにリクエストを送信される脆弱性
Title Apache HTTP Server の mod_proxy モジュールにおけるイントラネットサーバにリクエストを送信される脆弱性
Summary

Apache HTTP Server の mod_proxy モジュールは、リビジョン 1179239 パッチが適用されているとき、リバースプロキシの設定に対しての (1) RewriteRule、および (2) ProxyPassMatch パターンマッチを適切に処理しないため、イントラネットサーバにリクエストを送信される脆弱性が存在します。 本脆弱性は CVE-2011-3368 の修正が不完全だったことによる脆弱性です。

Possible impacts 第三者により、@ (アットマーク) で始まる不正な形式の URI による HTTP/0.9 プロトコルを使用することで、イントラネットサーバにリクエストを送信される可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date Oct. 25, 2011, midnight
Registration Date Dec. 1, 2011, 4:45 p.m.
Last Update Feb. 27, 2012, 5:01 p.m.
Affected System
Apache Software Foundation
Apache HTTP Server 2.0.x から 2.0.64
Apache HTTP Server 2.2.18 未満の 2.2.x
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
0 [2011年12月01日]
  掲載
[2012年02月27日]
  ベンダ情報：レッドハット (RHSA-2012:0128) を追加		 Feb. 17, 2018, 10:37 a.m.