CVE Vulnerabilities

CVE-2016-4422

Improper Authentication

Published: May 06, 2016 | Modified: Apr 12, 2025
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
10 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
HIGH
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The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

NameVendorStart VersionEnd Version
Libpam-sshauthLibpam-sshauth_project- (including)- (including)
Libpam-sshauthUbuntuesm-apps/xenial*
Libpam-sshauthUbuntuprecise*
Libpam-sshauthUbuntutrusty*
Libpam-sshauthUbuntuupstream*
Libpam-sshauthUbuntuwily*
Libpam-sshauthUbuntuxenial*

Potential Mitigations

References