CVE-2016-4448

libxml2: Format string vulnerability

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Format string vulnerability in libxml2 before 2.9.4 allows attackers to have unspecified impact via format string specifiers in unknown vectors.

Vulnerabilidad de formato de cadena en libxml2 en versiones anteriores a 2.9.4 permite a atacantes tener un impacto no especificado a través de especificadores de formato de cadena en vectores desconocidos.

It was discovered that libxml2 incorrectly handled format strings. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause libxml2 to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, and Ubuntu 16.04 LTS. It was discovered that libxml2 incorrectly handled certain malformed documents. If a user or automated system were tricked into opening a specially crafted document, an attacker could cause libxml2 to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-05-02 CVE Reserved
2016-05-27 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-134: Use of Externally-Controlled Format String

CAPEC

References (28)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2016/05/25/2	Mailing List
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html	Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html	Third Party Advisory
http://www.securityfocus.com/bid/90856	Third Party Advisory
http://www.securitytracker.com/id/1036348	Third Party Advisory
http://xmlsoft.org/news.html	Release Notes
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05194709	Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10170	Third Party Advisory
https://support.apple.com/HT206899	Release Notes
https://support.apple.com/HT206901	Release Notes
https://support.apple.com/HT206902	Release Notes
https://support.apple.com/HT206903	Release Notes
https://support.apple.com/HT206904	Release Notes
https://support.apple.com/HT206905	Release Notes
https://www.tenable.com/security/tns-2016-18	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html	2023-02-12
http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html	2023-02-12
http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html	2023-02-12
http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html	2023-02-12
http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html	2023-02-12
http://rhn.redhat.com/errata/RHSA-2016-2957.html	2023-02-12
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html	2023-02-12
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.404722	2023-02-12
https://access.redhat.com/errata/RHSA-2016:1292	2023-02-12
https://bugzilla.redhat.com/show_bug.cgi?id=1338700	2016-12-15
https://git.gnome.org/browse/libxml2/commit/?id=4472c3a5a5b516aaf59b89be602fbce52756c3e9	2023-02-12
https://git.gnome.org/browse/libxml2/commit/?id=502f6a6d08b08c04b3ddfb1cd21b2f699c1b7f5b	2023-02-12
https://access.redhat.com/security/cve/CVE-2016-4448	2016-12-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Hp Search vendor "Hp"	Icewall Federation Agent Search vendor "Hp" for product "Icewall Federation Agent"	3.0 Search vendor "Hp" for product "Icewall Federation Agent" and version "3.0"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"	-	Safe
Hp Search vendor "Hp"	Icewall Federation Agent Search vendor "Hp" for product "Icewall Federation Agent"	3.0 Search vendor "Hp" for product "Icewall Federation Agent" and version "3.0"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"	-	Safe
Apple Search vendor "Apple"	Icloud Search vendor "Apple" for product "Icloud"	< 5.2.1 Search vendor "Apple" for product "Icloud" and version " < 5.2.1"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe
Apple Search vendor "Apple"	Itunes Search vendor "Apple" for product "Itunes"	<= 12.4.1 Search vendor "Apple" for product "Itunes" and version " <= 12.4.1"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	*	-	Safe
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				<= 2.2.1 Search vendor "Apple" for product "Watchos" and version " <= 2.2.1"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 10.11.6 Search vendor "Apple" for product "Mac Os X" and version " < 10.11.6"		-		Affected
Xmlsoft Search vendor "Xmlsoft"		Libxml2 Search vendor "Xmlsoft" for product "Libxml2"				<= 2.9.3 Search vendor "Xmlsoft" for product "Libxml2" and version " <= 2.9.3"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				<= 9.3.2 Search vendor "Apple" for product "Iphone Os" and version " <= 9.3.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.3 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.3"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.7 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.2 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.3 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.3"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.4 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.5 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.7 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.2 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.3 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.3"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.7 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				14.0 Search vendor "Slackware" for product "Slackware Linux" and version "14.0"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				14.1 Search vendor "Slackware" for product "Slackware Linux" and version "14.1"		-		Affected
Oracle Search vendor "Oracle"		Vm Server Search vendor "Oracle" for product "Vm Server"				3.3 Search vendor "Oracle" for product "Vm Server" and version "3.3"		-		Affected
Oracle Search vendor "Oracle"		Vm Server Search vendor "Oracle" for product "Vm Server"				3.4 Search vendor "Oracle" for product "Vm Server" and version "3.4"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				<= 9.2.1 Search vendor "Apple" for product "Tvos" and version " <= 9.2.1"		-		Affected
Tenable Search vendor "Tenable"		Log Correlation Engine Search vendor "Tenable" for product "Log Correlation Engine"				4.8.0 Search vendor "Tenable" for product "Log Correlation Engine" and version "4.8.0"		-		Affected
Mcafee Search vendor "Mcafee"		Web Gateway Search vendor "Mcafee" for product "Web Gateway"				<= 7.5.2.10 Search vendor "Mcafee" for product "Web Gateway" and version " <= 7.5.2.10"		-		Affected
Mcafee Search vendor "Mcafee"		Web Gateway Search vendor "Mcafee" for product "Web Gateway"				>= 7.6.0.0 <= 7.6.2.3 Search vendor "Mcafee" for product "Web Gateway" and version " >= 7.6.0.0 <= 7.6.2.3"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				6 Search vendor "Oracle" for product "Linux" and version "6"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				7 Search vendor "Oracle" for product "Linux" and version "7"		0		Affected