Amazon Linux 2 : libfastjson (ALAS-2023-2079)

high Nessus Plugin ID 176947

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of libfastjson installed on the remote host is prior to 0.99.4-3. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2079 advisory.

A flaw was found in json-c. In printbuf_memappend, certain crafted values can overflow the memory allowing an attacker to write past the memory boundary. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-12762)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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 libfastjson' to update your system.

Plugin Details

Severity: High

ID: 176947

File Name: al2_ALAS-2023-2079.nasl

Version: 1.2

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/8/2023

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2020-12762

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:libfastjson-devel, p-cpe:/a:amazon:linux:libfastjson-debuginfo, p-cpe:/a:amazon:linux:libfastjson

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: 6/5/2023

Vulnerability Publication Date: 5/9/2020

Reference Information

CVE: CVE-2020-12762

Detections

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