Published: 06/02/2024 Updated: 14/02/2024

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 0

linux-pam (aka Linux PAM) prior to 1.6.0 allows malicious users to cause a denial of service (blocked login process) via mkfifo because the openat call (for protect_dir) lacks O_DIRECTORY.

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linux-pam linux-pam

Debian Bug report logs - #1061097 pam: CVE-2024-22365: pam_namespace: protect_dir(): use O_DIRECTORY to prevent local DoS situations Package: src:pam; Maintainer for src:pam is Sam Hartman <hartmans@debianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Thu, 18 Jan 2024 07:45:01 UTC Severity: import ...

A vulnerability was found in Linux PAM An unprivileged user that is not yet in a corresponding mount namespace with ~/tmp mounted as a polyinstantiated dir can place a FIFO there, and a subsequent attempt to login as this user with `pam_namespace` configured will cause the `openat()` in `protect_dir()` to block the attempt, causing a local denial ...

NVD-CWE-noinfo https://github.com/linux-pam/linux-pam http://www.openwall.com/lists/oss-security/2024/01/18/3 https://github.com/linux-pam/linux-pam/releases/tag/v1.6.0 https://github.com/linux-pam/linux-pam/commit/031bb5a5d0d950253b68138b498dc93be69a64cb https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1061097 https://nvd.nist.gov https://alas.aws.amazon.com/AL2/ALAS-2024-2435.html

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CVE-2024-22365

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