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.
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-20,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| canonical | ubuntu_linux | 12.10 |
| jean-paul_calderone | pyopenssl | * |
| jean-paul_calderone | pyopenssl | 0.9 |
| jean-paul_calderone | pyopenssl | 0.8 |
| jean-paul_calderone | pyopenssl | 0.12 |
| canonical | ubuntu_linux | 12.04 |
| jean-paul_calderone | pyopenssl | 0.7 |
| jean-paul_calderone | pyopenssl | 0.10 |
| canonical | ubuntu_linux | 13.04 |
| canonical | ubuntu_linux | 10.04 |
| jean-paul_calderone | pyopenssl | 0.11 |