CVE-2011-3639
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…
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EPSS puts the probability of exploitation in the next 30 days at 50.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 50.60% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- apache/http server · apache/http server2.0a1 · apache/http server2.0a2 · apache/http server2.0a3 · apache/http server2.0a4 · apache/http server2.0a5 · apache/http server2.0a6 · apache/http server2.0a7 · apache/http server2.0a8 · apache/http server2.0a9
- Source
- secalert@redhat.com
References
- http://rhn.redhat.com/errata/RHSA-2012-0128.html
- http://svn.apache.org/viewvc?view=revision&revision=1188745
- http://www.debian.org/security/2012/dsa-2405
- https://bugzilla.redhat.com/show_bug.cgi?id=752080
- http://rhn.redhat.com/errata/RHSA-2012-0128.html
- http://svn.apache.org/viewvc?view=revision&revision=1188745
- http://www.debian.org/security/2012/dsa-2405
- https://bugzilla.redhat.com/show_bug.cgi?id=752080
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.