CVEvulnerability

CVE-2026-3184

5.3 MEDIUM Published 2026-04-03 Modified 2026-08-31 Official page ↗
Status
Analyzed
Published
2026-04-03
Last modified
2026-08-31
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.7 LOW — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-289

Description

A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.

Affected configurations

• kernel util-linux • redhat hardened images

Related

Weakness · CWE (1)

  • CWE-289 Authentication Bypass by Alternate Name weakness

References