CVE-2013-4314

medium

Published 2022-05-17 · Modified 2024-02-23

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

4.3

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.

Predictions

Exploit likelihood

30%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
ubuntu	10.04	affected
ubuntu	12.04	affected
ubuntu	12.10	affected
ubuntu	13.04	affected
debian	bookworm	fixed	`0.13-2.1`
debian	bullseye	fixed	`0.13-2.1`
debian	forky	fixed	`0.13-2.1`
debian	sid	fixed	`0.13-2.1`
debian	trixie	fixed	`0.13-2.1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	pyopenssl	`<0.13.1`	`0.13.1`

Application impact

Vendor	Product	Versions
jean-paul_calderone	pyopenssl	`{"endIncluding":"0.13"}`
jean-paul_calderone	pyopenssl	`0.7`
jean-paul_calderone	pyopenssl	`0.8`
jean-paul_calderone	pyopenssl	`0.9`
jean-paul_calderone	pyopenssl	`0.10`
jean-paul_calderone	pyopenssl	`0.11`
jean-paul_calderone	pyopenssl	`0.12`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.