[GLSA-200903-28] libpng: Multiple vulnerabilities

Severity Normal

Affected Packages 1

Unaffected Packages 1

CVEs 3

Multiple vulnerabilities were found in libpng, which might result in the execution of arbitrary code

Background

libpng is the official PNG reference library used to read, write and
manipulate PNG images.

Description

Multiple vulnerabilities were discovered in libpng:

A memory leak bug was reported in png_handle_tEXt(), a function that is used while reading PNG images (CVE-2008-6218).
A memory overwrite bug was reported by Jon Foster in png_check_keyword(), caused by writing overlong keywords to a PNG file (CVE-2008-5907).
A memory corruption issue, caused by an incorrect handling of an out of memory condition has been reported by Tavis Ormandy of the Google Security Team. That vulnerability affects direct uses of png_read_png(), pCAL chunk and 16-bit gamma table handling (CVE-2009-0040).

Impact

A remote attacker may execute arbitrary code with the privileges of the
user opening a specially crafted PNG file by exploiting the erroneous
out-of-memory handling. An attacker may also exploit the
png_check_keyword() error to set arbitrary memory locations to 0, if
the application allows overlong, user-controlled keywords when writing
PNG files. The png_handle_tEXT() vulnerability may be exploited by an
attacker to potentially consume all memory on a users system when a
specially crafted PNG file is opened.

Workaround

There is no known workaround at this time.

Resolution

All libpng users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.35"

Package	Affected Version
pkg:ebuild/media-libs/libpng?distro=gentoo	< 1.2.35

Package	Unaffected Version
pkg:ebuild/media-libs/libpng?distro=gentoo	>= 1.2.35

ID

GLSA-200903-28

Severity

normal

URL

https://security.gentoo.org/glsa/200903-28

Published

2009-03-15T00:00:00
(15 years ago)

Modified

2009-03-15T00:00:00
(15 years ago)

Rights

Gentoo Foundation, Inc.

Other Advisories

Source	# ID	Name	URL
CVE	CVE-2008-5907	CVE-2008-5907	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5907
CVE	CVE-2008-6218	CVE-2008-6218	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-6218
CVE	CVE-2009-0040	CVE-2009-0040	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0040
Bugzilla	244808	Bugzilla #244808	https://bugs.gentoo.org/show_bug.cgi?id=244808
Bugzilla	255231	Bugzilla #255231	https://bugs.gentoo.org/show_bug.cgi?id=255231
Bugzilla	259578	Bugzilla #259578	https://bugs.gentoo.org/show_bug.cgi?id=259578

Type	Package URL	Namespace	Name / Product	Version	Distribution / Platform	Arch	Patch / Fix
Affected	pkg:ebuild/media-libs/libpng?distro=gentoo	media-libs	libpng	< 1.2.35	gentoo
Unaffected	pkg:ebuild/media-libs/libpng?distro=gentoo	media-libs	libpng	>= 1.2.35	gentoo

# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	Exploits	PoC	Pubblication Date	Modification Date
# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	PoC	Pubblication Date	Modification Date