Vulnerability Details CVE-2013-4314
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 48.1%
CVSS Severity
CVSS v2 Score 4.3
References
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html
- http://www.debian.org/security/2013/dsa-2763
- http://www.openwall.com/lists/oss-security/2013/09/06/2
- http://www.ubuntu.com/usn/USN-1965-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1005325
- https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html
- http://www.debian.org/security/2013/dsa-2763
- http://www.openwall.com/lists/oss-security/2013/09/06/2
- http://www.ubuntu.com/usn/USN-1965-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1005325
- https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html
Products affected by CVE-2013-4314
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.10
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.11
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.12
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.13
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.7
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.8
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cpe:2.3:a:jean-paul_calderone:pyopenssl:0.9
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cpe:2.3:o:canonical:ubuntu_linux:10.04
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cpe:2.3:o:canonical:ubuntu_linux:12.04
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cpe:2.3:o:canonical:ubuntu_linux:12.10
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cpe:2.3:o:canonical:ubuntu_linux:13.04