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.

- json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend. (CVE-2020-12762)

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: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/8/2023

Updated: 6/9/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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: p-cpe:/a:amazon:linux:libfastjson, p-cpe:/a:amazon:linux:libfastjson-debuginfo, p-cpe:/a:amazon:linux:libfastjson-devel, cpe:/o:amazon:linux:2

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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