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AlmaLinux 8 : python-jinja2 (ALSA-2021:4161)

medium Nessus Plugin ID 157638

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 8 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2021:4161 advisory.

 - This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory. (CVE-2020-28493)

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-jinja2 package.

See Also

https://errata.almalinux.org/8/ALSA-2021-4161.html

Plugin Details

Severity: Medium

ID: 157638

File Name: alma_linux_ALSA-2021-4161.nasl

Version: 1.4

Type: local

Published: 2/9/2022

Updated: 11/10/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

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-2020-28493

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:alma:linux:python3-jinja2, cpe:/o:alma:linux:8

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/9/2021

Vulnerability Publication Date: 2/1/2021

Reference Information

CVE: CVE-2020-28493