Amazon Linux AMI : libwebp (ALAS-2021-1530)

critical Nessus Plugin ID 153170


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


The version of libwebp installed on the remote host is prior to 0.3.0-10.7. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1530 advisory.

- A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow in function WebPDecodeRGBInto is possible due to an invalid check for buffer size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-36328)

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


Run 'yum update libwebp' to update your system.

See Also

Plugin Details

Severity: Critical

ID: 153170

File Name: ala_ALAS-2021-1530.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/9/2021

Updated: 9/9/2021

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

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2020-36328


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libwebp, p-cpe:/a:amazon:linux:libwebp-debuginfo, p-cpe:/a:amazon:linux:libwebp-devel, p-cpe:/a:amazon:linux:libwebp-java, p-cpe:/a:amazon:linux:libwebp-tools, cpe:/o:amazon:linux

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/2/2021

Vulnerability Publication Date: 5/21/2021

Reference Information

CVE: CVE-2020-36328

ALAS: 2021-1530