Linux-PAM 1.1.2 symlink

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.
4.0$0-$5k0.00

A vulnerability classified as problematic has been found in Linux-PAM 1.1.2. Affected is an unknown code. The manipulation with an unknown input leads to a symlink vulnerability. CWE is classifying the issue as CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. This is going to have an impact on confidentiality. CVE summarizes:

The privilege-dropping implementation in the (1) pam_env and (2) pam_mail modules in Linux-PAM (aka pam) 1.1.2 does not check the return value of the setfsuid system call, which might allow local users to obtain sensitive information by leveraging an unintended uid, as demonstrated by a symlink attack on the .pam_environment file in a user s home directory. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-3435.

The weakness was shared 01/24/2011 as Bug 641361 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2010-3431. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 59704 (GLSA-201206-31 : Linux-PAM: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks.

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 X-Force (62026), Tenable (59704), SecurityFocus (BID 43487†) and Vulnerability Center (SBV-31909†). The entries VDB-56223, VDB-56221, VDB-56215 and VDB-56213 are related to this item.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 59704
Nessus Name: GLSA-201206-31 : Linux-PAM: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 840672
OpenVAS Name: Ubuntu Update for pam USN-1140-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 843807a3a90f52e7538be756616510730a24739a

Timelineinfo

09/17/2010 🔍
01/24/2011 +129 days 🔍
01/24/2011 +0 days 🔍
01/24/2011 +0 days 🔍
06/20/2011 +147 days 🔍
03/19/2015 +1368 days 🔍
10/13/2021 +2400 days 🔍

Sourcesinfo

Advisory: Bug 641361
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-3431 (🔍)
OVAL: 🔍

X-Force: 62026
SecurityFocus: 43487
Secunia: 49711
Vulnerability Center: 31909 - Linux-PAM 1.1.2 Local Information Disclosure Vulnerability (CVE-2010-3431), Low

See also: 🔍

Entryinfo

Created: 03/19/2015 11:27 PM
Updated: 10/13/2021 06:54 AM
Changes: 03/19/2015 11:27 PM (56), 03/24/2017 12:04 PM (7), 10/13/2021 06:40 AM (7), 10/13/2021 06:54 AM (1)
Complete: 🔍
Cache ID: 18:28F:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!