Incorrect Authorization Affecting linux-pam/linux-pam package, versions [,1.5.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-LINUXPAMLINUXPAM-10774351
- published18 Jul 2025
- disclosed17 Jun 2025
- creditAlexander Bergmann, Thomas Blume, Valentin Lefebvre, Patrick Del Bello, Marco Benatto, Tomas Bzatek
Introduced: 17 Jun 2025
CVE-2025-6018 (opens in a new tab)How to fix?
Upgrade linux-pam/linux-pam to version 1.5.0 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization via improper enforcement of access controls in the pam_env module. An attacker can gain elevated privileges by exploiting this weakness to perform actions typically restricted to users with physical console access, potentially allowing unauthorized control over system configurations, services, or other sensitive operations.
##Workaround
For the users of Linux-PAM <=1.4.0 it is recommended to set pam_env parameter user_readenv to 0. It is set to 0 by default since Linux-PAM 1.4.0.
In the version 1.5.0 the functionality is deprecated.