CVE-2011-4317 — MEDIUM (4.3)

Vulnerability Description

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.

CVSS Score

4.3

MEDIUM

AV:N/AC:M/Au:N/C:N/I:P/A:N

Confidentiality

NONE

Integrity

PARTIAL

Availability

NONE

Affected Products

Vendor	Product	Versions
Apache	Http Server	1.3

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2011-4317?

CVE-2011-4317 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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...

How severe is CVE-2011-4317?

CVE-2011-4317 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2011-4317?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Http Server.