CVE-2013-4314: canonical ubuntu_linux Improper Input Validation
CVSS: 4.3v2.0MediumModified
AliasesMGASA-2013-0277GHSA-6748-36qp-fx6rPYSEC-2013-31DEBIAN-CVE-2013-4314DSA-2763-1openSUSE-SU-2024:14154-1openSUSE-SU-2026:11470-1
Published 30-09-2013Last modified 06-08-2024
Vulnerability summary
CVE-2013-4314 is a medium (CVSS 4.3) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 1.20% chance of exploitation in the next 30 days, higher than 67.8% of scored vulnerabilities.
CVSS score
4.3/10
010
Medium · v2.0 (NVD)EPSS score
1.20%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 30-09-2013PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 3 versionsHigh 8.7Preferred score · OSV · Pypi (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NSourcesSingle source
High 7.5Preferred score · OSV · Pypi (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.20%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
0.00 pp
From 1.20% on 21-09-2026
21-09-202621-10-2026
EPSS score1.20%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mageia2 products
- python-OpenSSL< 0.12-1.1.mga2
- python-OpenSSL< 0.13-2.1.mga3
Canonical1 product
- ubuntu_linuxEOL10.04 | 12.04 | 12.10 | 13.04
Debian1 product
- pyopenssl< 0.13-2.1 | < 0.10-1+squeeze1 | < 0.13-2+deb7u1
Jean-paul_calderone1 product
- pyopenssl≤ 0.13 | 0.7 | 0.8:a1 | 0.9 | 0.10 | 0.11 | 0.11:a1 | 0.11:a2 | 0.12
Opensuse1 product
- python-pyOpenSSL&distro=openSUSE Tumbleweed< 24.1.0-1.2 | < 26.4.0-1.1
PyPI1 product
- pyopenssl< 0.13.1
6 vendors · 7 products
References
15 links
- mail.python.org/pipermail/pyopenssl-users/2013-September/000478.htmlMailing ListX Refsource MLISTWEB
