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 (reached 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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