NULL pointer dereference in Libpng
CVE-2011-2691
The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.039 (89.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- Libpng
- Debian Linux — versions 5.0, 6.0
- Fedoraproject Fedora — versions 14
Weakness classification (CWE)
References
- secunia.com/advisories/49660 (Broken Link, third-party-advisory)
- www.securityfocus.com/bid/48660 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- libpng.git.sourceforge.net/git/gitweb.cgi
- secunia.com/advisories/45046 (Broken Link, third-party-advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/68537 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
- security.gentoo.org/glsa/glsa-201206-15.xml (vendor-advisory, Third Party Advisory)
- www.libpng.org/pub/png/libpng.html (Product, Vendor Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2011-2691?
- CVE-2011-2691 is a medium-severity vulnerability in Libpng, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2011-07-17.
- How severe is CVE-2011-2691?
- Medium severity. CVSS v3 base score is 6.5 out of 10.