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Debian dla-4518 : php-seclib - security update

high Nessus Plugin ID 304326

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4518 advisory.

 - ----------------------------------------------------------------------- Debian LTS Advisory DLA-4518-1 [email protected] https://www.debian.org/lts/security/ Utkarsh Gupta March 30, 2026 https://wiki.debian.org/LTS
 - -----------------------------------------------------------------------

 Package : phpseclib Version : 1.0.19-3+deb11u3 CVE ID : CVE-2023-52892 CVE-2026-32935

 Two vulnerabilities were discovered in phpseclib, a PHP Secure Communications Library.

 CVE-2023-52892

 Some characters in Subject Alternative Name fields in TLS certificates were incorrectly allowed to have a special meaning in regular expressions, leading to name confusion in X.509 certificate host verification.

 CVE-2026-32935

 The AES-CBC implementation was susceptible to a padding oracle timing attack due to the use of a short-circuiting logical operator in the unpadding function.

 For Debian 11 bullseye, these problems have been fixed in version 1.0.19-3+deb11u3.

 We recommend that you upgrade your phpseclib packages.

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

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

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

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

Solution

Upgrade the php-seclib packages.

See Also

https://security-tracker.debian.org/tracker/source-package/phpseclib

https://packages.debian.org/source/bullseye/phpseclib

https://security-tracker.debian.org/tracker/CVE-2023-52892

https://security-tracker.debian.org/tracker/CVE-2026-32935

Plugin Details

Severity: High

ID: 304326

File Name: debian_DLA-4518.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/30/2026

Updated: 3/30/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-32935

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:php-seclib

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/30/2026

Vulnerability Publication Date: 6/27/2024

Reference Information

CVE: CVE-2023-52892, CVE-2026-32935