CVE-2011-2692

libpng: Invalid read when handling empty sCAL chunks

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The png_handle_sCAL function in pngrutil.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 does not properly handle invalid sCAL chunks, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a crafted PNG image that triggers the reading of uninitialized memory.

La función png_handle_sCAL de pngrutil.c en libpng v1.0.x antes de la v1.0.55, en v1.2.x antes de la v1.2.45, en v1.4.x antes de la v1.4.8, y en v1.5.x antes de la v1.5.4, no controla correctamente fragmentos inválidos SCAL, que permiten a atacantes remotos causar una denegación de servicio (corrupción de memoria y caída de aplicación) o posiblemente tener un impacto no especificado a través de una imagen PNG creada que provoca la lectura de la memoria sin inicializar.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-07-11 CVE Reserved
2011-07-17 CVE Published
2023-08-05 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (29)

URL	Tag	Source
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=61a2d8a2a7b03023e63eae9a3e64607aaaa6d339	X_refsource_confirm
http://secunia.com/advisories/45046	Broken Link
http://secunia.com/advisories/45405	Broken Link
http://secunia.com/advisories/45415	Broken Link
http://secunia.com/advisories/45445	Broken Link
http://secunia.com/advisories/45460	Broken Link
http://secunia.com/advisories/45461	Broken Link
http://secunia.com/advisories/45492	Broken Link
http://secunia.com/advisories/49660	Broken Link
http://support.apple.com/kb/HT5002	Third Party Advisory
http://support.apple.com/kb/HT5281	Third Party Advisory
http://www.kb.cert.org/vuls/id/819894	Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/07/13/2	Mailing List
http://www.securityfocus.com/bid/48618	Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/68536	Third Party Advisory

URL	Date	SRC
http://sourceforge.net/mailarchive/forum.php?thread_name=003101cc2790%24fb5d6e80%24f2184b80%24%40acm.org&forum_name=png-mng-implement	2024-08-06

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=720612	2011-07-28

URL	Date	SRC
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html	2023-02-13
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html	2023-02-13
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html	2023-02-13
http://security.gentoo.org/glsa/glsa-201206-15.xml	2023-02-13
http://www.debian.org/security/2011/dsa-2287	2023-02-13
http://www.libpng.org/pub/png/libpng.html	2023-02-13
http://www.mandriva.com/security/advisories?name=MDVSA-2011:151	2023-02-13
http://www.redhat.com/support/errata/RHSA-2011-1103.html	2023-02-13
http://www.redhat.com/support/errata/RHSA-2011-1104.html	2023-02-13
http://www.redhat.com/support/errata/RHSA-2011-1105.html	2023-02-13
http://www.ubuntu.com/usn/USN-1175-1	2023-02-13
https://access.redhat.com/security/cve/CVE-2011-2692	2011-07-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libpng Search vendor "Libpng"		Libpng Search vendor "Libpng" for product "Libpng"				>= 1.0.0 < 1.0.55 Search vendor "Libpng" for product "Libpng" and version " >= 1.0.0 < 1.0.55"		-		Affected
Libpng Search vendor "Libpng"		Libpng Search vendor "Libpng" for product "Libpng"				>= 1.2.0 < 1.2.45 Search vendor "Libpng" for product "Libpng" and version " >= 1.2.0 < 1.2.45"		-		Affected
Libpng Search vendor "Libpng"		Libpng Search vendor "Libpng" for product "Libpng"				>= 1.4.0 < 1.4.8 Search vendor "Libpng" for product "Libpng" and version " >= 1.4.0 < 1.4.8"		-		Affected
Libpng Search vendor "Libpng"		Libpng Search vendor "Libpng" for product "Libpng"				>= 1.5.0 < 1.5.4 Search vendor "Libpng" for product "Libpng" and version " >= 1.5.0 < 1.5.4"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				14 Search vendor "Fedoraproject" for product "Fedora" and version "14"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				5.0 Search vendor "Debian" for product "Debian Linux" and version "5.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				6.0 Search vendor "Debian" for product "Debian Linux" and version "6.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				8.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "8.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				11.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "11.04"		-		Affected