Improper input validation in Apache HTTP Server
CVE-2011-3368
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 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 initial @ (at sign) character.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.907 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.907 · newest: 0.907 · change: 0.000
Affected products
- Apache HTTP Server — versions 1.3, 1.3.0, 1.3.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- web.archiveorange.com/archive/v/ZyS0hzECD5zzb2NkvQlt (mailing-list, Exploit, Patch)
- svn.apache.org/viewvc (Patch)
- marc.info/ (vendor-advisory)
- www.contextis.com/research/blog/reverseproxybypass/
- seclists.org/fulldisclosure/2011/Oct/273 (mailing-list)
- www.redhat.com/support/errata/RHSA-2011-1391.html (vendor-advisory)
- www-01.ibm.com/support/docview.wss (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2012-0543.html (vendor-advisory)
- secunia.com/advisories/46288 (third-party-advisory)
- osvdb.org/76079 (vdb-entry)
Frequently asked questions
- What is CVE-2011-3368?
- CVE-2011-3368 is a vulnerability in Apache HTTP Server, classified under Improper Input Validation. Published 2011-10-05.
- Is CVE-2011-3368 known to be exploited?
- 31 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.