CVE-2013-2099

NameCVE-2013-2099
DescriptionAlgorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1107-1
NVD severitymedium (attack range: remote)
Debian Bugs708530, 709066, 709067, 709068, 709069, 709070, 709071, 709486

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
bzr (PTS)jessie (security), jessie2.6.0+bzr6595-6+deb8u1fixed
stretch (security), stretch2.7.0+bzr6619-7+deb9u1fixed
buster, sid2.7.0+bzr6622-15fixed
linkchecker (PTS)jessie9.3-1+deb8u1fixed
stretch9.3-4fixed
buster, sid9.4.0-2fixed
python-tornado (PTS)jessie3.2.2-1.1fixed
stretch4.4.3-1fixed
buster, sid5.1.1-2fixed
python-urllib3 (PTS)jessie1.9.1-3fixed
stretch1.19.1-1fixed
buster, sid1.24-1fixed
python2.7 (PTS)jessie2.7.9-2+deb8u1fixed
jessie (security)2.7.9-2+deb8u2fixed
stretch (security), stretch2.7.13-2+deb9u3fixed
buster, sid2.7.15-5fixed
u1db (PTS)jessie13.10-5fixed
stretch13.10-6.2fixed
buster, sid13.10-6.3fixed
w3af (PTS)jessie1.0-rc3svn3489-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
bzrsource(unstable)2.6.0~bzr6574-1low709068
bzrsourcewheezy2.6.0~bzr6526-1+deb7u1mediumDLA-1107-1
linkcheckersource(unstable)8.5-1low709067
python-tornadosource(unstable)2.4.1-3low709069
python-urllib3source(unstable)1.6-2low709070
python2.5source(unstable)(not affected)
python2.6source(unstable)(not affected)
python2.7source(unstable)2.7.5-5low709066
python2.7sourcewheezy(not affected)
python3.1source(unstable)(not affected)
python3.2source(unstable)(unfixed)low708530
python3.3source(unstable)3.3.2-3low708530
u1dbsource(unstable)13.10-1low709486
w3afsource(unstable)(unfixed)low709071

Notes

[wheezy] - python2.7 <not-affected> (Backport was introduced in 2.7.3-11)
[wheezy] - linkchecker <no-dsa> (Minor issue)
[squeeze] - linkchecker <no-dsa> (Minor issue)
[wheezy] - python3.2 <no-dsa> (Minor issue)
- python2.6 <not-affected> (Introduced in Python 3.2)
- python2.5 <not-affected> (Introduced in Python 3.2)
- python3.1 <not-affected> (Introduced in Python 3.2)
[squeeze] - bzr <no-dsa> (Minor issue)
[wheezy] - python-urllib3 <no-dsa> (Minor issue)
[wheezy] - python-tornado <no-dsa> (Minor issue)
[squeeze] - python-tornado <no-dsa> (Minor issue)
[jessie] - w3af <no-dsa> (Minor issue)
[wheezy] - w3af <no-dsa> (Minor issue)
[squeeze] - w3af <no-dsa> (Minor issue)

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