CVE-2024-22365 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linux-pam	Linux-pam
Redhat	Enterprise Linux

Configuration 1 [-]

cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*

Package	CPE	Advisory	Released Date
Red Hat Enterprise Linux 8
pam-0:1.3.1-33.el8	cpe:/o:redhat:enterprise_linux:8	RHSA-2024:3163	2024-05-22T00:00:00Z
Red Hat Enterprise Linux 9
pam-0:1.5.1-19.el9	cpe:/a:redhat:enterprise_linux:9	RHSA-2024:2438	2024-04-30T00:00:00Z
pam-0:1.5.1-19.el9	cpe:/o:redhat:enterprise_linux:9	RHSA-2024:2438	2024-04-30T00:00:00Z

References

Link	Providers
http://www.openwall.com/lists/oss-security/2024/01/18/3
https://github.com/linux-pam/linux-pam
https://github.com/linux-pam/linux-pam/commit/031bb5a5d0d950253b68138b498dc93be69a64cb
https://github.com/linux-pam/linux-pam/releases/tag/v1.6.0
https://nvd.nist.gov/vuln/detail/CVE-2024-22365
https://www.cve.org/CVERecord?id=CVE-2024-22365
https://www.openwall.com/lists/oss-security/2024/01/18/3

History

Thu, 05 Jun 2025 19:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 05 Jun 2025 17:45:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-664

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-02-06T00:00:00.000Z

Updated: 2025-06-05T16:13:13.334Z

Reserved: 2024-01-09T00:00:00.000Z

Link: CVE-2024-22365

Vulnrichment

Updated: 2024-08-01T22:43:34.704Z

NVD

Status : Modified

Published: 2024-02-06T08:15:52.203

Modified: 2025-06-05T17:15:27.617

Link: CVE-2024-22365

Redhat

Severity : Moderate

Publid Date: 2024-01-18T00:00:00Z

Links: CVE-2024-22365 - Bugzilla

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{"affected_release": [{"advisory": "RHSA-2024:3163", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "pam-0:1.3.1-33.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-05-22T00:00:00Z"}, {"advisory": "RHSA-2024:2438", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "pam-0:1.5.1-19.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}, {"advisory": "RHSA-2024:2438", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "pam-0:1.5.1-19.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}], "bugzilla": {"description": "pam: allowing unprivileged user to block another user namespace", "id": "2257722", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2257722"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-277", "details": ["linux-pam (aka Linux PAM) before 1.6.0 allows attackers to cause a denial of service (blocked login process) via mkfifo because the openat call (for protect_dir) lacks O_DIRECTORY.", "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 of service."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-22365", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "pam", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2024-01-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-22365\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-22365\nhttps://www.openwall.com/lists/oss-security/2024/01/18/3"], "statement": "Red Hat rates this as Moderate, as this vulnerability needs a non-default configuration in order to be explored by a malicious user. Also, the attack is local and the Denial of Service happens to a single user.", "threat_severity": "Moderate"}