CVE-2013-4314
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductJean-paul Calderone Pyopenssl
PublishedSep 30, 2013
First seenSep 30, 2013
How to fix
Update
- pyopenssl0.13.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| jean-paul_calderone pyopenssl | v ≤ 0.13, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12 | — |
| canonical ubuntu_linux | 10.04, 12.04, 12.10, 13.04 | — |
| pyopensslPyPI | v < 0.13.1 | 0.13.1 |
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