#VU59445 Out-of-bounds read in Adobe Acrobat and Adobe Reader - CVE-2021-45060

Vulnerability identifier: #VU59445

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-2021-45060

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Adobe Acrobat
Client/Desktop applications / Office applications
Adobe Reader
Client/Desktop applications / Office applications

Vendor: Adobe

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Adobe Acrobat: 15.006.30503 - 15.006.30527, 17.008.30051 - 17.011.30204, 20.001.30020 - 20.013.20074, 21.001.20135 - 21.007.20099

Adobe Reader: 21.001.20135, 21.001.20149, 21.001.20150, 21.001.20155, 21.005.20054, 21.005.20058, 21.005.20060, 21.005.20148, 21.007.20091, 21.007.20095, 21.007.20096, 21.007.20099, 2015.006.30508 - 2020.013.20074

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External links
https://helpx.adobe.com/security/products/acrobat/apsb22-01.html
https://www.zerodayinitiative.com/advisories/ZDI-22-060/

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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.