Improper Input Validation Affecting apache2 package, versions <2.2.21-3


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
93.33% (100th percentile)

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  • Snyk IDSNYK-DEBIAN10-APACHE2-391550
  • published30 Nov 2011
  • disclosed30 Nov 2011

Introduced: 30 Nov 2011

CVE-2011-4317  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:10 apache2 to version 2.2.21-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2 package and not the apache2 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21, 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 via a malformed URI containing an @ (at sign) character and a : (colon) character in invalid positions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368.

References

CVSS Scores

version 3.1