#VU53188 Out-of-bounds write in Adobe InDesign - CVE-2021-21099

Vulnerability identifier: #VU53188

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-2021-21099

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Adobe InDesign
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 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 InDesign: 11.3.0 - 11.4.1, 12.0 - 12.1.0, 13.0 - 13.1, 14.0 - 14.0.3, 15.0 - 15.1.3, 16.0 - 16.2

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External links
https://helpx.adobe.com/security/products/indesign/apsb21-22.html

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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.