Detections
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EulerOS Virtualization 2.9.0 : python-lxml (EulerOS-SA-2021-2792)

medium Nessus Plugin ID 155482

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

According to the versions of the python-lxml package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

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

Solution

Update the affected python-lxml packages.

See Also

http://www.nessus.org/u?2a340c48

Plugin Details

Severity: Medium

ID: 155482

File Name: EulerOS_SA-2021-2792.nasl

Version: 1.4

Type: local

Published: 11/17/2021

Updated: 11/23/2023

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:huawei:euleros:python3-lxml, cpe:/o:huawei:euleros:uvp:2.9.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/17/2021

Vulnerability Publication Date: 3/21/2021

Reference Information

CVE: CVE-2021-28957