Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2011-2691

NULL Pointer Dereference

Published: Jul 17, 2011 | Modified: Apr 11, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
4.3 LOW
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V3
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2011-2691
CWEhttps://cwe.mitre.org/data/definitions/476.html

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.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
LibpngLibpng1.0.0 (including)1.0.55 (excluding)
LibpngLibpng1.2.0 (including)1.2.45 (excluding)
LibpngLibpng1.4.0 (including)1.4.8 (excluding)
LibpngLibpng1.5.0 (including)1.5.4 (excluding)
Chromium-browserUbuntulucid*
Chromium-browserUbuntumaverick*
Chromium-browserUbuntunatty*
Chromium-browserUbuntuoneiric*
FirefoxUbuntudevel*
FirefoxUbuntuhardy*
FirefoxUbuntulucid*
FirefoxUbuntumaverick*
FirefoxUbuntunatty*
FirefoxUbuntuoneiric*
FirefoxUbuntuprecise*
LibpngUbuntuupstream*

Potential Mitigations

References

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