Out-of-bounds Read in Libpng
CVE-2011-2501
The png_format_buffer 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 allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.
Vulnerability class: Buffer Overflow
EPSS: 0.035 (87.9th percentile) — read the EPSS interpretation.
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.
Affected products
- Libpng
- Canonical Ubuntu_linux — versions 8.04, 10.04, 10.10
- Debian Debian_linux — versions 5.0, 6.0
- Fedoraproject Fedora — versions 14
- N/a — versions n/a
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, third-party-advisory)
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, third-party-advisory)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (vendor-advisory, x_refsource_MANDRIVA, Broken Link)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (vendor-advisory, Patch, Mailing List, Third Party Advisory, x_refsource_SLACKWARE)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2011-2501?
- CVE-2011-2501 is a medium-severity vulnerability in Libpng, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2011-07-17.
- How severe is CVE-2011-2501?
- Medium severity. CVSS v3 base score is 6.5 out of 10.