#VU55031 Out-of-bounds write in Adobe After Effects - CVE-2021-35994

Vulnerability identifier: #VU55031

Vulnerability 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-2021-35994

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Adobe After Effects
Client/Desktop applications / Multimedia software

Vendor: Adobe

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input. A remote attacker can create a specially crafted JPG2000 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

Adobe After Effects: 1.0 - 18.2.1, 2.0 - 2.0.1, 3.0 - 3.1, 4.0 - 4.1, 5.0 - 5.5, 6.0 - 6.5, 7.0, 8.0 - 8.0.2, 9.0 - 9.0.3

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External links
https://helpx.adobe.com/security/products/after_effects/apsb21-54.html
https://www.zerodayinitiative.com/advisories/ZDI-21-896/

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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.