X.org X.Org Server up to 1.14.3 Service dix/dixfonts.c doImageText resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability was found in X.org X.Org Server up to 1.14.3. It has been declared as critical. This vulnerability affects the function doImageText of the file dix/dixfonts.c of the component Service. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.

The weakness was disclosed 10/08/2013 as Use after free in Xserver handling of ImageText requests as not defined mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability was named CVE-2013-4396 since 06/12/2013. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is needed for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 70450 (Oracle Linux 5 / 6 : xorg-x11-server (ELSA-2013-1426)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 123461 (Fedora Security Update for nx-libs (FEDORA-2015-3953)).

Upgrading to version 1.15.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (87768), Tenable (70450), SecurityFocus (BID 62892†), OSVDB (98314†) and Secunia (SA55001†). The entries VDB-58334, VDB-79571 and VDB-79616 are pretty similar.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 70450
Nessus Name: Oracle Linux 5 / 6 : xorg-x11-server (ELSA-2013-1426)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Port: 🔍

OpenVAS ID: 892784
OpenVAS Name: Debian Security Advisory DSA 2784-1 (xorg-server - use-after-free
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: X.Org Server 1.15.0

Timelineinfo

06/12/2013 🔍
10/08/2013 +118 days 🔍
10/08/2013 +0 days 🔍
10/08/2013 +0 days 🔍
10/09/2013 +1 days 🔍
10/10/2013 +1 days 🔍
10/15/2013 +5 days 🔍
10/16/2013 +1 days 🔍
10/20/2013 +4 days 🔍
05/26/2021 +2775 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: Use after free in Xserver handling of ImageText requests
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-4396 (🔍)
OVAL: 🔍

X-Force: 87768
SecurityFocus: 62892
Secunia: 55001 - X.Org Xserver "doImageText()" Use-After-Free Vulnerability, Less Critical
OSVDB: 98314
Vulnerability Center: 41995 - X.Org X11 Server before 1.14.4 Remote Code Execution and DoS Vulnerability via Crafted Image Text, High

See also: 🔍

Entryinfo

Created: 10/15/2013 11:01 AM
Updated: 05/26/2021 04:43 PM
Changes: 10/15/2013 11:01 AM (82), 05/13/2017 10:46 AM (1), 05/26/2021 04:43 PM (3)
Complete: 🔍
Committer: olku
Cache ID: 18:2F5:40

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