CVE-2013-4238

Published: 17 August 2013

The ssl.match_hostname function in the SSL module in Python 2.6 through 3.4 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Notes

Author	Note
jdstrand	reproducer in upstream report

Priority

Status

Package	Release	Status
python2.6 Launchpad, Ubuntu, Debian	lucid	Released (2.6.5-1ubuntu6.2)
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	upstream	Needed
	Patches: upstream: http://hg.python.org/cpython/rev/79007c4244d6 upstream: http://hg.python.org/cpython/rev/50803d881a92 (regression) upstream: http://hg.python.org/cpython/rev/07ee48ce4513 (fix)
python2.7 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Released (2.7.3-0ubuntu3.4)
	quantal	Released (2.7.3-5ubuntu4.3)
	raring	Released (2.7.4-2ubuntu3.2)
	upstream	Needed
	Patches: upstream: http://hg.python.org/cpython/rev/bd2360476bdb upstream: http://hg.python.org/cpython/rev/1cd24ea5abeb (regression) upstream: http://hg.python.org/cpython/rev/a7d5b86ffb95 (fix)
python3.1 Launchpad, Ubuntu, Debian	lucid	Ignored (end of life)
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	upstream	Needed
python3.2 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Released (3.2.3-0ubuntu3.5)
	quantal	Released (3.2.3-6ubuntu3.4)
	raring	Does not exist
	upstream	Needed
python3.3 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Released (3.3.0-1ubuntu0.1)
	raring	Released (3.3.1-1ubuntu5.2)
	upstream	Needed
	Patches: upstream: http://hg.python.org/cpython/rev/7a0f398d1a5c (trunk) upstream: http://hg.python.org/cpython/rev/577e9402cadd (trunk regression) upstream: http://hg.python.org/cpython/rev/4e93f32176fb (trunk fix) upstream: http://hg.python.org/cpython/rev/c9f073e593b0 (3.3) upstream: http://hg.python.org/cpython/rev/004743d210e4 (3.3 regression) upstream: http://hg.python.org/cpython/rev/90040e560527 (3.3 fix)

References

Bugs

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