CVE-2013-4314

Publication date 9 September 2013

Last updated 24 July 2024

Ubuntu priority

The X509Extension in pyOpenSSL before 0.13.1 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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
pyopenssl	13.04 raring	Fixed 0.13-2ubuntu3.1
	12.10 quantal	Fixed 0.13-2ubuntu1.1
	12.04 LTS precise	Fixed 0.12-1ubuntu2.1
	10.04 LTS lucid	Fixed 0.10-1ubuntu0.1

How can I get the fixes?
What do statuses mean?
Patch details

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
pyopenssl	Upstream: http://bazaar.launchpad.net/~exarkun/pyopenssl/trunk/revision/169

References

MITRE
NVD
Launchpad
Debian

Related Ubuntu Security Notices (USN)

USN-1965-1
pyOpenSSL vulnerability
23 September 2013

Other references

https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html
https://www.cve.org/CVERecord?id=CVE-2013-4314