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CVE-2013-4314

Publication date 9 September 2013

Last updated 24 July 2024

Ubuntu priority

Medium

Why this 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

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

Patch details

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

Package Patch details
pyopenssl

References

Related Ubuntu Security Notices (USN)

    • USN-1965-1
    • pyOpenSSL vulnerability
    • 23 September 2013

Other references