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Debian dsa-5853 : libpam-u2f - security update

high Nessus Plugin ID 214792

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5853 advisory.

 - ------------------------------------------------------------------------- Debian Security Advisory DSA-5853-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso January 29, 2025 https://www.debian.org/security/faq
 - -------------------------------------------------------------------------

 Package : pam-u2f CVE ID : CVE-2025-23013

 Matthias Gerstner reported that pam-u2f, a PAM module which allows to use U2F (Universal 2nd Factor) devices in the PAM authentication stack, does not properly handle PAM_IGNORE return values, allowing to bypass the second factor or password-less login without inserting the proper device.

 For the stable distribution (bookworm), this problem has been fixed in version 1.1.0-1.1+deb12u1.

 We recommend that you upgrade your pam-u2f packages.

 For the detailed security status of pam-u2f please refer to its security tracker page at:
 https://security-tracker.debian.org/tracker/pam-u2f

 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

 Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libpam-u2f packages.

See Also

https://security-tracker.debian.org/tracker/source-package/pam-u2f

https://security-tracker.debian.org/tracker/CVE-2025-23013

https://packages.debian.org/source/bookworm/pam-u2f

Plugin Details

Severity: High

ID: 214792

File Name: debian_DSA-5853.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/29/2025

Updated: 1/29/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2025-23013

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.3

Threat Score: 4.4

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:pamu2fcfg, p-cpe:/a:debian:debian_linux:libpam-u2f, cpe:/o:debian:debian_linux:12.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 1/29/2025

Vulnerability Publication Date: 1/15/2025

Reference Information

CVE: CVE-2025-23013