VDB-227164 · CVE-2012-1093 · GCVE-0-2012-1093

x11-common prior 1:7.6+12 on Debian Installation link following

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in x11-common on Debian. This vulnerability affects unknown code of the component Installation Handler. Executing a manipulation can lead to link following. The identification of this vulnerability is CVE-2012-1093. The attack can only be executed locally. Furthermore, there is an exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in x11-common on Debian (Windowing System Software) and classified as critical. This vulnerability affects an unknown function of the component Installation Handler. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The init script in the Debian x11-common package before 1:7.6+12 is vulnerable to a symlink attack that can lead to a privilege escalation during package installation.

The weakness was shared 04/22/2023. The advisory is shared for download at vladz.devzero.fr. This vulnerability was named CVE-2012-1093 since 02/14/2012. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at vladz.devzero.fr. It is declared as proof-of-concept.

Upgrading to version 1:7.6+12 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Windowing System Software

Name

x11-common

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: x11-common 1:7.6+12

Timelineinfo

02/14/2012 🔍
04/22/2023 +4084 days 🔍
04/22/2023 +0 days 🔍
04/22/2023 +0 days 🔍

Sourcesinfo

Advisory: vladz.devzero.fr
Status: Confirmed

CVE: CVE-2012-1093 (🔍)
GCVE (CVE): GCVE-0-2012-1093
GCVE (VulDB): GCVE-100-227164
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/22/2023 08:59
Changes: 04/22/2023 08:59 (59)
Complete: 🔍
Cache ID: 216::103