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Amazon Linux 2022 : python-jwt (ALAS2022-2022-241)

high Nessus Plugin ID 168566

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Synopsis

The remote Amazon Linux 2022 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-241 advisory.

 - PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms.
 With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorithms are supported. The application can specify `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be explicit with the algorithms that are accepted and expected when decoding. (CVE-2022-29217)

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

Solution

Run 'yum update python-jwt' to update your system.

See Also

https://alas.aws.amazon.com/AL2022/ALAS-2022-241.html

https://alas.aws.amazon.com/cve/html/CVE-2022-29217.html

Plugin Details

Severity: High

ID: 168566

File Name: al2022_ALAS2022-2022-241.nasl

Version: 1.2

Type: local

Agent: unix

Published: 12/9/2022

Updated: 12/9/2022

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2022-29217

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:python3-jwt, p-cpe:/a:amazon:linux:python3-jwt%2bcrypto, cpe:/o:amazon:linux:2022

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/6/2022

Vulnerability Publication Date: 5/24/2022

Reference Information

CVE: CVE-2022-29217