Debian DLA-2606-1 : lxml security update

medium Nessus Plugin ID 148173

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Synopsis

The remote Debian host is missing a security update.

Description

An issue has been found in lxml, a pythonic binding for the libxml2 and libxslt libraries.

Due to missing input sanitization, XSS is possible for the HTML5 formaction attribute.

For Debian 9 stretch, this problem has been fixed in version 3.7.1-1+deb9u4.

We recommend that you upgrade your lxml packages.

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

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

Plugin Details

Severity: Medium

ID: 148173

File Name: debian_DLA-2606.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/26/2021

Updated: 1/12/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-28957

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python3-lxml, p-cpe:/a:debian:debian_linux:python3-lxml-dbg, p-cpe:/a:debian:debian_linux:python-lxml-dbg, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:python-lxml-doc, p-cpe:/a:debian:debian_linux:python-lxml

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: 3/24/2021

Vulnerability Publication Date: 3/21/2021

Reference Information

CVE: CVE-2021-28957

Detections

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