Detections
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SCA: security update for lxml (GHSA-wrxv-2j5q-m38w)

medium Tenable Self-Hosted Container Security Plugin ID 420114

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only
 applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not
 affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the
 application. The vulnerability is caused by the iterwalk function (also used by the canonicalize
 function). Such code shouldn't be in wide-spread use, given that parsing + iterwalk would usually be
 replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N
 would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If
 untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered.
 (CVE-2022-2309)

See Also

https://github.com/advisories/GHSA-wrxv-2j5q-m38w

Plugin Details

Severity: Medium

ID: 420114

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.7

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2022-2309

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/6/2022

Vulnerability Publication Date: 7/5/2022

Reference Information

CVE: CVE-2022-2309

cwe: CWE-476