XFree86 up to 4.2.1 Pixmap Generator numeric error

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in XFree86 up to 4.2.1. Affected is an unknown function of the component Pixmap Generator. Such manipulation leads to numeric error. This vulnerability is listed as CVE-2005-2495. The attack must be carried out from within the local network. There is no available exploit. It is recommended to use an alternative to replace the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in XFree86 up to 4.2.1. Affected by this issue is an unknown code block of the component Pixmap Generator. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Multiple integer overflows in XFree86 before 4.3.0 allow user-assisted attackers to execute arbitrary code via a crafted pixmap image.

The bug was discovered 05/05/2004. The weakness was presented 09/13/2005 by Luke Hutchison as Bug 166859 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2005-2495 since 08/08/2005. Access to the local network is required for this attack. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 496 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22952 (Solaris 10 (sparc) : 119059-73 (deprecated)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Solaris Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117839 (CentOS Security Update for X.org (CESA-2005:396)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at xfree86.org. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (22244), Tenable (22952), SecurityFocus (BID 14807†), OSVDB (19352†) and Secunia (SA16777†). See VDB-1747 and VDB-38077 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22952
Nessus Name: Solaris 10 (sparc) : 119059-73 (deprecated)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 55445
OpenVAS Name: Slackware Advisory SSA:2005-269-02 X.Org pixmap overflow
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Alternative
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: xfree86.org

Timelineinfo

05/05/2004 🔍
08/08/2005 +460 days 🔍
09/12/2005 +35 days 🔍
09/13/2005 +1 days 🔍
09/13/2005 +0 days 🔍
09/13/2005 +0 days 🔍
09/14/2005 +0 days 🔍
09/15/2005 +1 days 🔍
09/19/2005 +4 days 🔍
09/19/2005 +0 days 🔍
11/06/2006 +413 days 🔍
06/30/2025 +6811 days 🔍

Sourcesinfo

Advisory: Bug 166859
Researcher: Luke Hutchison
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-2495 (🔍)
GCVE (CVE): GCVE-0-2005-2495
GCVE (VulDB): GCVE-100-1748

OVAL: 🔍

CERT: 🔍
X-Force: 22244
SecurityFocus: 14807 - XFree86 Pixmap Allocation Local Privilege Escalation Vulnerability
Secunia: 16777 - XFree86 Pixmap Creation Integer Overflow Vulnerability, Less Critical
OSVDB: 19352 - X11/XFree86 Pixmap Allocation Local Overflow
SecurityTracker: 1014887
Vulnerability Center: 9196 - X.Org Heap-based Buffer Overflow in Pixmap Memory Allocation, Medium
Vupen: ADV-2006-3140

See also: 🔍

Entryinfo

Created: 09/14/2005 16:21
Updated: 06/30/2025 05:23
Changes: 09/14/2005 16:21 (92), 07/04/2019 12:48 (5), 01/19/2025 06:00 (23), 06/30/2025 05:23 (7)
Complete: 🔍
Cache ID: 216::103

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