Remote code execution in Adobe SVG Native Viewer Library

1) Heap-based buffer overflow

EUVDB-ID: #VU56656

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39823

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing SVG files. A remote attacker can pass specially crafted SVG file to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SVG Native Viewer: 8182d14

External links

http://helpx.adobe.com/security/products/svg-native-viewer/apsb21-72.html
http://github.com/adobe/svg-native-viewer/commit/b79ecc37b2572b27aa8ff93de67ffa55828e4df8

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.