CVE-2013-4314
Last modified
CVE-2013-4314 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Jean-Paul Calderone | Pyopenssl | <= 0.13 | — |
| Jean-Paul Calderone | Pyopenssl | 0.7 | — |
| Jean-Paul Calderone | Pyopenssl | 0.8 | A1 |
| Jean-Paul Calderone | Pyopenssl | 0.9 | — |
| Jean-Paul Calderone | Pyopenssl | 0.10 | — |
| Jean-Paul Calderone | Pyopenssl | 0.11 | — |
| Jean-Paul Calderone | Pyopenssl | 0.12 | — |
| Canonical | Ubuntu Linux | 10.04 | — |
| Canonical | Ubuntu Linux | 12.04 | — |
| Canonical | Ubuntu Linux | 12.10 | — |
| Canonical | Ubuntu Linux | 13.04 | — |
References
- http://www.ubuntu.com/usn/USN-1965-1Vendor Advisory
- http://www.ubuntu.com/usn/USN-1965-1Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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