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Debian DLA-2784-1 : icu - LTS security update

medium Nessus Plugin ID 154020

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Synopsis

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

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2784 advisory.

 It was discovered that there was a potential use-after-free vulnerability in icu, a library which provides Unicode and locale functionality. CVE-2020-21913 International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp. For Debian 9 Stretch, these problems have been fixed in version 57.1-6+deb9u5.
 We recommend that you upgrade your icu packages. 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 icu packages.

For Debian 9 Stretch, these problems have been fixed in version 57.1-6+deb9u5.

See Also

https://www.debian.org/lts/security/2021/dla-2784

https://security-tracker.debian.org/tracker/CVE-2020-21913

https://packages.debian.org/source/stretch/icu

Plugin Details

Severity: Medium

ID: 154020

File Name: debian_DLA-2784.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/12/2021

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-21913

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:icu-devtools, p-cpe:/a:debian:debian_linux:icu-devtools-dbg, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:libicu57, p-cpe:/a:debian:debian_linux:icu-doc, p-cpe:/a:debian:debian_linux:libicu57-dbg, p-cpe:/a:debian:debian_linux:libicu-dev

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: 10/12/2021

Vulnerability Publication Date: 9/20/2021

Reference Information

CVE: CVE-2020-21913