Remote code execution in Adobe Animate

1) Out-of-bounds write

EUVDB-ID: #VU50525

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-21052

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing FLA files. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Animate: 20.0 - 21.0.2

CPE2.3

• cpe:2.3:a:adobe:animate:20.0:*:*:*:*:*:*:*
• cpe:2.3:a:adobe:animate:20.5:*:*:*:*:*:*:*
• cpe:2.3:a:adobe:animate:21.0:*:*:*:*:*:*:*

External links

https://helpx.adobe.com/security/products/animate/apsb21-11.html
https://www.fortiguard.com/zeroday/FG-VD-20-138

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.