Debian dla-4536 : libtiff-dev - security update

high Nessus Plugin ID 307615

Synopsis

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

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4536 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4536-1 [email protected] https://www.debian.org/lts/security/ Emilio Pozuelo Monfort April 17, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : tiff Version : 4.2.0-1+deb11u8 CVE ID : CVE-2026-4775

Quang Luong discovered a heap overflow in the libtiff library, which may result in denial of service or the execution of arbitrary code if malformed image files are processed.

For Debian 11 bullseye, this problem has been fixed in version 4.2.0-1+deb11u8.

We recommend that you upgrade your tiff packages.

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

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 this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libtiff-dev packages.

Plugin Details

Severity: High

ID: 307615

File Name: debian_DLA-4536.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 4/20/2026

Updated: 4/20/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-4775

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libtiff-doc, p-cpe:/a:debian:debian_linux:libtiff-opengl, p-cpe:/a:debian:debian_linux:libtiff-tools, p-cpe:/a:debian:debian_linux:libtiff5, p-cpe:/a:debian:debian_linux:libtiff5-dev, p-cpe:/a:debian:debian_linux:libtiffxx5, p-cpe:/a:debian:debian_linux:libtiff-dev

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/17/2026

Vulnerability Publication Date: 3/24/2026

Reference Information

CVE: CVE-2026-4775

Detections

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