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CVE-2011-3639

medium · 4.3

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.

4.3
CVSS
50.6%
EPSS (exploit prob.)
99th
EPSS percentile
2011-11-30
Published

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

Weaknesses

CWE-20

Affected products

VendorProductAffected versions
apachehttp_server2.0.11
apachehttp_server2.0.12
apachehttp_server2.0.13
apachehttp_server2.0.14
apachehttp_server2.0.15
apachehttp_server2.0.16
apachehttp_server2.0.17
apachehttp_server2.0.18
apachehttp_server2.0.19
apachehttp_server2.0.20
apachehttp_server2.0.21
apachehttp_server2.0.22
apachehttp_server2.0.23
apachehttp_server2.0.24
apachehttp_server2.0.25
apachehttp_server2.0.26
apachehttp_server2.0.27
apachehttp_server2.0.28
apachehttp_server2.0.29
apachehttp_server2.0.30
apachehttp_server2.0.31
apachehttp_server2.0.32
apachehttp_server2.0.33
apachehttp_server2.0.34
apachehttp_server2.0.35
apachehttp_server2.0.36
apachehttp_server2.0.37
apachehttp_server2.0.38
apachehttp_server2.0.39
apachehttp_server2.0.40
apachehttp_server2.0.41
apachehttp_server2.0.42
apachehttp_server2.0.43
apachehttp_server2.0.44
apachehttp_server2.0.45
apachehttp_server2.0.46
apachehttp_server2.0.47
apachehttp_server2.0.48
apachehttp_server2.0.49
apachehttp_server2.0.50

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2011-3639