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.
Metrics
CVSS 2.0 4.3/10
AV:N/AC:M/Au:N/C:N/I:P/A:NWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Sep 30, 2013
- Last modified
- Jun 16, 2026
- NVD status
- Modified