X Server up to 1.11.0 LockServer link following

CVSS Meta Temp Score
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CTI Interest Score
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2.8$0-$5k0.00

Summaryinfo

A vulnerability was found in X Server up to 1.11.0. It has been rated as problematic. This affects the function LockServer. Performing a manipulation results in link following. This vulnerability was named CVE-2011-4028. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in X Server up to 1.11.0. This affects the function LockServer. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality. The summary by CVE is:

The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to determine the existence of arbitrary files via a symlink attack on a temporary lock file, which is handled differently if the file exists.

The weakness was presented 07/03/2012 by vladz (Website). The advisory is shared at secunia.com. This vulnerability is uniquely identified as CVE-2011-4028. The exploitability is told to be difficult. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 68474 (Oracle Linux 5 : xorg-x11-server (ELSA-2012-0303)), 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 350643 (Amazon Linux Security Advisory for xorg-x11-server: ALAS-2012-104).

Upgrading to version 1.11.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (70725), Tenable (68474), SecurityFocus (BID 50193†) and Vulnerability Center (SBV-33641†). See VDB-61174 for similar entry. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.9
VulDB Meta Temp Score: 2.8

VulDB Base Score: 2.9
VulDB Temp Score: 2.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
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: 68474
Nessus Name: Oracle Linux 5 : xorg-x11-server (ELSA-2012-0303)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70617
OpenVAS Name: FreeBSD Ports: xorg-server
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: X Server 1.11.1
Patch: cgit.freedesktop.org

Timelineinfo

10/09/2011 🔍
10/18/2011 +9 days 🔍
10/18/2011 +0 days 🔍
10/30/2011 +12 days 🔍
07/03/2012 +247 days 🔍
07/03/2012 +0 days 🔍
07/12/2013 +374 days 🔍
03/23/2015 +619 days 🔍
12/05/2021 +2449 days 🔍

Sourcesinfo

Advisory: RHSA-2012:0303⛔
Researcher: vladz
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-4028 (🔍)
GCVE (CVE): GCVE-0-2011-4028
GCVE (VulDB): GCVE-100-61173

OVAL: 🔍

X-Force: 70725
SecurityFocus: 50193 - X.Org X11 File Enumeration Information Disclosure Vulnerability
Secunia: 46460
Vulnerability Center: 33641 - X.Org X11 Windows Server Information of Files\x27 Existence Disclosure, Low

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/05/2021 17:32
Changes: 03/23/2015 16:50 (62), 04/04/2017 11:27 (10), 12/05/2021 17:25 (7), 12/05/2021 17:32 (2)
Complete: 🔍
Cache ID: 216:F22:103

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