Improper input validation in Jean-Paul Calderone Pyopenssl
CVE-2013-4314
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.012 (67.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Jean-Paul Calderone Pyopenssl — versions 0.7, 0.8, 0.9
- Canonical Ubuntu Linux — versions 10.04, 12.04, 12.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2013/dsa-2763 (vendor-advisory)
- mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html (mailing-list)
- bugzilla.redhat.com/show_bug.cgi
- lists.opensuse.org/opensuse-updates/2013-11/msg00015.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2013/09/06/2 (mailing-list)
- www.ubuntu.com/usn/USN-1965-1 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2013-4314?
- CVE-2013-4314 is a vulnerability in Jean-Paul Calderone Pyopenssl, classified under Improper Input Validation. Published 2013-09-30.
- Is CVE-2013-4314 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.