Improper input validation in Apache HTTP Server
CVE-2011-4317
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.596 (99.1th percentile) — read the EPSS interpretation.
Affected products
- Apache Http_server — versions 1.3, 1.3.0, 1.3.1
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Exploit, x_refsource_MISC)
- secalert@redhat.com (x_refsource_HP, vendor-advisory)
- secalert@redhat.com (x_refsource_HP, vendor-advisory)
- secalert@redhat.com (x_refsource_HP, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (x_refsource_CONFIRM, Exploit)
- secalert@redhat.com (vendor-advisory, x_refsource_APPLE)
- secalert@redhat.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2011-4317?
- CVE-2011-4317 is a vulnerability in Apache HTTP Server, classified under Improper Input Validation. Published 2011-11-30.
- Is CVE-2011-4317 known to be exploited?
- 24 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.