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.
Advisories
Source ID Title
EUVD EUVD EUVD-2010-3429 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.
Ubuntu USN Ubuntu USN USN-1140-1 PAM vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-07T03:11:44.353Z

Reserved: 2010-09-17T00:00:00

Link: CVE-2010-3431

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2011-01-24T18:00:01.970

Modified: 2025-04-11T00:51:21.963

Link: CVE-2010-3431

cve-icon Redhat

Severity : Moderate

Publid Date: 2010-09-21T00:00:00Z

Links: CVE-2010-3431 - Bugzilla

cve-icon OpenCVE Enrichment

No data.