Rocky Linux 8 : python-lxml (RLSA-2021:4158)

medium Nessus Plugin ID 184871

Synopsis

The remote Rocky Linux host is missing a security update.

Description

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:4158 advisory.

- An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
(CVE-2021-28957)

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

Solution

Update the affected python3-lxml and / or python3-lxml-debuginfo packages.

Plugin Details

Severity: Medium

ID: 184871

File Name: rocky_linux_RLSA-2021-4158.nasl

Version: 1.0

Type: local

Family: Rocky Linux Local Security Checks

Published: 11/7/2023

Updated: 11/7/2023

Supported Sensors: 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:rocky:linux:python3-lxml, p-cpe:/a:rocky:linux:python3-lxml-debuginfo, cpe:/o:rocky:linux:8

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/9/2021

Vulnerability Publication Date: 3/21/2021

Reference Information

CVE: CVE-2021-28957

Detections

Analytics