CVE-2015-1804

libXfont: out-of-bounds memory access in bdfReadCharacters

Severity Score

8.5

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not properly perform type conversion for metrics values, which allows remote authenticated users to cause a denial of service (out-of-bounds memory access) and possibly execute arbitrary code via a crafted BDF font file.

La función bdfReadCharacters en bitmap/bdfread.c en X.Org libXfont anterior a 1.4.9 y 1.5.x anterior a 1.5.1 no realiza adecuadamente la conversión de tipos para valores métricos, lo que permite a usuarios remotos autenticados causar una denegación de servicio (acceso a memoria fuera de rango) y la posibilidad de ejecutar código arbitrario a través de archivos de fuente BDF.

An integer truncation flaw was discovered in the way libXfont processed certain Glyph Bitmap Distribution Format (BDF) fonts. A malicious, local user could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with the privileges of the X.Org server.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-02-17 CVE Reserved
2015-03-18 CVE Published
2024-08-06 CVE Updated
2024-09-13 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-189: Numeric Errors
CWE-805: Buffer Access with Incorrect Length Value

CAPEC

References (19)

URL	Tag	Source
http://advisories.mageia.org/MGASA-2015-0113.html	X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html	X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html	X_refsource_confirm
http://www.securityfocus.com/bid/73279	Vdb Entry
http://www.securitytracker.com/id/1031935	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152497.html	2016-12-31
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152838.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00032.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00002.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00005.html	2016-12-31
http://lists.opensuse.org/opensuse-updates/2015-12/msg00074.html	2016-12-31
http://rhn.redhat.com/errata/RHSA-2015-1708.html	2016-12-31
http://www.debian.org/security/2015/dsa-3194	2016-12-31
http://www.mandriva.com/security/advisories?name=MDVSA-2015:145	2016-12-31
http://www.ubuntu.com/usn/USN-2536-1	2016-12-31
http://www.x.org/wiki/Development/Security/Advisory-2015-03-17	2016-12-31
https://security.gentoo.org/glsa/201507-21	2016-12-31
https://access.redhat.com/security/cve/CVE-2015-1804	2015-09-03
https://bugzilla.redhat.com/show_bug.cgi?id=1203719	2015-09-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	<= 1.4.8 Search vendor "X" for product "Libxfont" and version " <= 1.4.8"	-	Affected	in	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"	lts	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	<= 1.4.8 Search vendor "X" for product "Libxfont" and version " <= 1.4.8"	-	Affected	in	Canonical Search vendor "Canonical"	Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"	12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"	lts	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	<= 1.4.8 Search vendor "X" for product "Libxfont" and version " <= 1.4.8"	-	Affected	in	Canonical Search vendor "Canonical"	Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"	14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"	lts	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	<= 1.4.8 Search vendor "X" for product "Libxfont" and version " <= 1.4.8"	-	Affected	in	Canonical Search vendor "Canonical"	Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"	14.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.10"	-	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	<= 1.4.8 Search vendor "X" for product "Libxfont" and version " <= 1.4.8"	-	Affected	in	Debian Search vendor "Debian"	Debian Linux Search vendor "Debian" for product "Debian Linux"	7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"	-	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	1.5.0 Search vendor "X" for product "Libxfont" and version "1.5.0"	-	Affected	in	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"	lts	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	1.5.0 Search vendor "X" for product "Libxfont" and version "1.5.0"	-	Affected	in	Canonical Search vendor "Canonical"	Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"	12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"	lts	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	1.5.0 Search vendor "X" for product "Libxfont" and version "1.5.0"	-	Affected	in	Canonical Search vendor "Canonical"	Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"	14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"	lts	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	1.5.0 Search vendor "X" for product "Libxfont" and version "1.5.0"	-	Affected	in	Canonical Search vendor "Canonical"	Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"	14.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.10"	-	Safe
X Search vendor "X"	Libxfont Search vendor "X" for product "Libxfont"	1.5.0 Search vendor "X" for product "Libxfont" and version "1.5.0"	-	Affected	in	Debian Search vendor "Debian"	Debian Linux Search vendor "Debian" for product "Debian Linux"	7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"	-	Safe