CVE-2016-1000110

NameCVE-2016-1000110
DescriptionThe CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY variable name clash in a CGI script, which could allow a remote attacker to redirect HTTP requests.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesELA-239-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python2.7 (PTS)jessie, jessie (lts)2.7.9-2-ds1-1+deb8u11vulnerable
stretch (security)2.7.13-2+deb9u6fixed
stretch (lts), stretch2.7.13-2+deb9u8fixed
buster2.7.16-2+deb10u1fixed
buster (security)2.7.16-2+deb10u3fixed
bullseye2.7.18-8+deb11u1fixed
python3.4 (PTS)jessie, jessie (lts)3.4.2-1+deb8u15fixed
python3.5 (PTS)stretch (security)3.5.3-1+deb9u5fixed
stretch (lts), stretch3.5.3-1+deb9u8fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python2.6source(unstable)(unfixed)unimportant
python2.7source(unstable)2.7.12-2unimportant
python3.2source(unstable)(unfixed)unimportant
python3.4sourcejessie3.4.2-1+deb8u8ELA-239-1
python3.4source(unstable)(unfixed)unimportant
python3.5source(unstable)3.5.2-3unimportant

Notes

https://bugs.python.org/issue27568
https://github.com/python/cpython/commit/436fe5a447abb69e5e5a4f453325c422af02dcaa (3.4)
No part of Python does set HTTP_PROXY based on a Proxy: header, the Python bug
just provides a hardening to discard HTTP_PROXY if it thinks a Python script is
running as a CGI script

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