CVE-2015-8540 Information

Description

Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99 1.0.x before 1.0.66 1.1.x and 1.2.x before 1.2.56 1.3.x and 1.4.x before 1.4.19 and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image which triggers an out-of-bounds read.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174435.html http://sourceforge.net/p/libpng/bugs/244/ http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/ http://sourceforge.net/projects/libpng/files/libpng10/1.0.66/ http://sourceforge.net/projects/libpng/files/libpng12/1.2.56/ http://sourceforge.net/projects/libpng/files/libpng14/1.4.19/ http://sourceforge.net/projects/libpng/files/libpng15/1.5.26/ http://www.debian.org/security/2016/dsa-3443 http://www.openwall.com/lists/oss-security/2015/12/10/6 http://www.openwall.com/lists/oss-security/2015/12/10/7 http://www.openwall.com/lists/oss-security/2015/12/11/1 http://www.openwall.com/lists/oss-security/2015/12/11/2 http://www.openwall.com/lists/oss-security/2015/12/17/10 http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html http://www.securityfocus.com/bid/80592 https://access.redhat.com/errata/RHSA-2016:1430 https://security.gentoo.org/glsa/201611-08

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8