CVEvulnerability

CVE-2011-3639

4.3 MEDIUM Published 2011-11-30 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-11-30
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
Weaknesses
CWE-20

Description

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.

Affected configurations

• apache http server 2.0.11 • apache http server 2.0.12 • apache http server 2.0.13 • apache http server 2.0.14 • apache http server 2.0.15 • apache http server 2.0.16 • apache http server 2.0.17 • apache http server 2.0.18 • apache http server 2.0.19 • apache http server 2.0.20 • apache http server 2.0.21 • apache http server 2.0.22 • apache http server 2.0.23 • apache http server 2.0.24 • apache http server 2.0.25 • apache http server 2.0.26 • apache http server 2.0.27 • apache http server 2.0.28 • apache http server 2.0.29 • apache http server 2.0.30 • apache http server 2.0.31 • apache http server 2.0.32 • apache http server 2.0.33 • apache http server 2.0.34 • apache http server 2.0.35 • apache http server 2.0.36 • apache http server 2.0.37 • apache http server 2.0.38 • apache http server 2.0.39 • apache http server 2.0.40 • apache http server 2.0.41 • apache http server 2.0.42 • apache http server 2.0.43 • apache http server 2.0.44 • apache http server 2.0.45 • apache http server 2.0.46 • apache http server 2.0.47 • apache http server 2.0.48 • apache http server 2.0.49 • apache http server 2.0.50 • apache http server 2.0.51 • apache http server 2.0.52 • apache http server 2.0.53 • apache http server 2.0.54 • apache http server 2.0.55 • apache http server 2.0.56 • apache http server 2.0.57 • apache http server 2.0.58 • apache http server 2.0.59 • apache http server 2.0.61 • apache http server 2.0.63 • apache http server 2.2.0 • apache http server 2.2.1 • apache http server 2.2.2 • apache http server 2.2.3 • apache http server 2.2.4 • apache http server 2.2.6 • apache http server 2.2.8 • apache http server 2.2.9 • apache http server 2.2.10 … and 16 more

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References