Amazon Linux AMI update for ghostscript

Published: 2023-10-06

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2020-16305
CWE-ID	CWE-20
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system ghostscript Operating systems & Components / Operating system package or component
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU45847

Risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-16305

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in devices/gdevpcx.c. A remote attacker can cause a denial of service via a crafted PDF file.

Mitigation

Update the affected packages:

i686:
    ghostscript-devel-8.70-24.31.amzn1.i686
    ghostscript-debuginfo-8.70-24.31.amzn1.i686
    ghostscript-8.70-24.31.amzn1.i686
    ghostscript-doc-8.70-24.31.amzn1.i686

src:
    ghostscript-8.70-24.31.amzn1.src

x86_64:
    ghostscript-doc-8.70-24.31.amzn1.x86_64
    ghostscript-debuginfo-8.70-24.31.amzn1.x86_64
    ghostscript-devel-8.70-24.31.amzn1.x86_64
    ghostscript-8.70-24.31.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

ghostscript: before 8.70-24.31

External links

http://alas.aws.amazon.com/ALAS-2023-1854.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.