X.Org up to 1.4 on Linux access control

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

A vulnerability has been found in X.Org up to 1.4 on Linux and classified as critical. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by associating stdin with a file that is misinterpreted as the console TTY.

The weakness was disclosed 10/28/2011 by vladz (Website). The advisory is shared for download at lists.x.org. The public release happened without coordination with the vendor. This vulnerability was named CVE-2011-4613 since 11/29/2011. The attack needs to be approached locally. The successful exploitation needs a single authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

A public exploit has been developed by vladz (vladz) and been published immediately after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 57504 (Debian DSA-2364-1 : xorg - incorrect permission check), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195128 (Ubuntu Security Notification for Xorg Vulnerability (USN-1349-1)).

Upgrading to version 1.11.3 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (71847), Exploit-DB (18040), Tenable (57504), SecurityFocus (BID 51082†) and OSVDB (84058†). The entry VDB-61174 is pretty similar.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.4
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: vladz (vladz)
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 57504
Nessus Name: Debian DSA-2364-1 : xorg - incorrect permission check
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70576
OpenVAS Name: Debian Security Advisory DSA 2364-1 (xorg)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: X.Org 1.11.3

Timelineinfo

10/28/2011 🔍
10/28/2011 +0 days 🔍
10/28/2011 +0 days 🔍
11/29/2011 +32 days 🔍
12/15/2011 +16 days 🔍
12/15/2011 +0 days 🔍
12/16/2011 +1 days 🔍
01/12/2012 +27 days 🔍
01/17/2012 +5 days 🔍
06/30/2012 +165 days 🔍
07/27/2012 +27 days 🔍
02/05/2014 +558 days 🔍
01/05/2025 +3987 days 🔍

Sourcesinfo

Advisory: lists.x.org
Researcher: vladz
Status: Confirmed

CVE: CVE-2011-4613 (🔍)
OVAL: 🔍

X-Force: 71847
SecurityFocus: 51082 - X.Org X Server X wrapper Local Security Bypass Vulnerability
OSVDB: 84058
Vulnerability Center: 34244 - X.Org X server X wrapper Local Security Bypass Caused By A Flaw in X Wrapper Configuration File, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 07/27/2012 04:55 PM
Updated: 01/05/2025 07:08 PM
Changes: 07/27/2012 04:55 PM (76), 04/09/2017 01:27 PM (11), 03/26/2021 11:21 AM (3), 09/06/2024 01:25 AM (14), 01/05/2025 07:08 PM (2)
Complete: 🔍
Cache ID: 18:B7C:40

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