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Amazon Linux AMI : python26-rsa (ALAS-2020-1421)

high Nessus Plugin ID 140090

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Synopsis

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

Description

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the ALAS-2020-1421 advisory.

 - Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python- RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation). (CVE-2020-13757)

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-rsa' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2020-1421.html

https://access.redhat.com/security/cve/CVE-2020-13757

Plugin Details

Severity: High

ID: 140090

File Name: ala_ALAS-2020-1421.nasl

Version: 1.2

Type: local

Agent: unix

Published: 8/31/2020

Updated: 2/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2020-13757

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:H/I:N/A:N

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

Vulnerability Information

CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:python27-rsa, p-cpe:/a:amazon:linux:python26-rsa

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/26/2020

Vulnerability Publication Date: 6/1/2020

Reference Information

CVE: CVE-2020-13757

ALAS: 2020-1421