X.org X11 up to 6.6 XFS Font Server difs/events.c SendErrToClient memory corruption

CVSS Meta Temp Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in X.org X11 up to 6.6 and classified as problematic. Affected by this vulnerability is the function SendErrToClient of the file difs/events.c of the component XFS Font Server. The manipulation results in memory corruption. This vulnerability was named CVE-2012-1699. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in X.org X11 up to 6.6 (Windowing System Software). Affected is the function SendErrToClient of the file difs/events.c of the component XFS Font Server. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, and availability. CVE summarizes:

The ProcSetEventMask function in difs/events.c in the xfs font server for X.Org X11R6 through X11R6.6 and XFree86 before 3.3.3 calls the SendErrToClient function with a mask value instead of a pointer, which allows local users to cause a denial of service (memory corruption and crash) or obtain potentially sensitive information from memory via a SetEventMask request that triggers an invalid pointer dereference.

The weakness was presented 12/21/2012 as Bug 842841 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2012-1699 since 03/16/2012. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 63443 (HP-UX PHSS_43202 : s700_800 11.23 X Font Server Patch), which helps to determine the existence of the flaw in a target environment. It is assigned to the family HP-UX Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120379 (Solaris X.Org Denial of Service Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (63443) and Vulnerability Center (SBV-35848†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.1
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 63443
Nessus Name: HP-UX PHSS_43202 : s700_800 11.23 X Font Server Patch
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/16/2012 🔍
08/06/2012 +143 days 🔍
08/14/2012 +8 days 🔍
12/21/2012 +129 days 🔍
12/21/2012 +0 days 🔍
01/09/2013 +19 days 🔍
03/24/2015 +804 days 🔍
01/02/2025 +3572 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: Bug 842841
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-1699 (🔍)
GCVE (CVE): GCVE-0-2012-1699
GCVE (VulDB): GCVE-100-63228

OVAL: 🔍

SecurityFocus: 57047
Vulnerability Center: 35848 - X.Org on Oracle Solaris 9 Remote DoS Vulnerability Related to SetEventMask and SendErrToClient(), Medium

Entryinfo

Created: 03/24/2015 12:22
Updated: 01/02/2025 14:43
Changes: 03/24/2015 12:22 (57), 04/15/2017 16:27 (8), 12/21/2021 07:03 (4), 01/02/2025 14:43 (18)
Complete: 🔍
Cache ID: 216::103

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