Gentoo update for GPL Ghostscript

Published: 2022-11-22

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-3781 CVE-2022-2085
CWE-ID	CWE-94 CWE-476
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Gentoo Linux Operating systems & Components / Operating system app-text/ghostscript-gpl Operating systems & Components / Operating system package or component
Vendor	Gentoo

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU56385

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-3781

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker can create a specially crafted SVG file, upload it to the affected system and execute arbitrary code.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.
app-text/ghostscript-gpl to version: 9.56.1

Vulnerable software versions

Gentoo Linux: All versions

app-text/ghostscript-gpl: before 9.56.1

External links

http://security.gentoo.org/glsa/202211-11

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) NULL pointer dereference

EUVDB-ID: #VU67507

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2085

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No