CVE-2013-4238
Description
The ssl.match_hostname function in the SSL module in Python 2.6 through 3.4 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, a related issue to CVE-2009-2408.
Predictions
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 withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| ubuntu | 10.04 | affected | |
| suse | 11.4 | affected | |
| suse | 12.2 | affected | |
| suse | 12.3 | affected | |
| debian | bullseye | fixed | 2.7.5-8 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| python | python | 2.6.1 | |
| python | python | 2.6.2 | |
| python | python | 2.6.3 | |
| python | python | 2.6.4 | |
| python | python | 2.6.5 | |
| python | python | 2.6.6 | |
| python | python | 2.6.7 | |
| python | python | 2.6.8 | |
| python | python | 2.6.2150 | |
| python | python | 2.6.6150 | |
| python | python | 2.7.1 | |
| python | python | 2.7.2 | |
| python | python | 2.7.3 | |
| python | python | 2.7.1150 | |
| python | python | 2.7.2150 | |
| python | python | 3.0 | |
| python | python | 3.0.1 | |
| python | python | 3.1 | |
| python | python | 3.1.1 | |
| python | python | 3.1.2 | |
| python | python | 3.1.3 | |
| python | python | 3.1.4 | |
| python | python | 3.1.5 | |
| python | python | 3.1.2150 | |
| python | python | 3.2 | |
| python | python | 3.2.3 | |
| python | python | 3.2.2150 | |
| python | python | 3.3 | |
| python | python | 3.4 | |
References
- https://www.suse.com/security/cve/CVE-2013-4238.html
- http://bugs.python.org/issue18709
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00026.html
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00027.html
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00028.html
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00029.html
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00042.html
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00043.html
- http://rhn.redhat.com/errata/RHSA-2013-1582.html
- http://seclists.org/fulldisclosure/2014/Dec/23
- http://www.debian.org/security/2014/dsa-2880
- http://www.securityfocus.com/archive/1/534161/100/0/threaded
- http://www.ubuntu.com/usn/USN-1982-1
- http://www.vmware.com/security/advisories/VMSA-2014-0012.html
- https://bugzilla.redhat.com/show_bug.cgi?id=996381
- https://security-tracker.debian.org/tracker/CVE-2013-4238
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.