#VU80642 Out-of-bounds write in Adobe Reader and Adobe Acrobat - CVE-2023-26369

Vulnerability identifier: #VU80642

Vulnerability risk: Critical

CVSSv4.0: 8.4 [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:A/U:Red]

CVE-ID: CVE-2023-26369

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Adobe Reader
Client/Desktop applications / Office applications
Adobe Acrobat
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 PDF. A remote attacker can create a specially crafted PDF file, trick the victim into opening it using the affected software, trigger an out-of-bounds write and execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Adobe Reader: 20.005.30331 - 2020.013.20074, 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, 21.011.20039, 22.001.20085 - 22.003.20322, 23.001.20064 - 23.003.20284

Adobe Acrobat: 15.006.30306 - 15.006.30527, 17.008.30051 - 17.012.30229, 18.009.20044, 18.009.20050, 18.011.20035, 18.011.20038, 18.011.20040, 18.011.20055, 18.011.20058, 18.011.20063, 19.008.20071, 19.008.20080, 19.008.20081, 19.010.20064, 19.010.20069, 19.010.20091, 19.010.20098, 19.010.20100, 19.012.20034, 19.012.20035, 19.012.20036, 19.012.20040, 19.021.20047, 19.021.20056, 19.021.20058, 19.021.20061, 20.001.30002 - 20.013.20074, 21.001.201 - 21.011.20039, 22.001.20085 - 22.003.20322, 23.001.20064 - 23.003.20284

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External links
https://helpx.adobe.com/security/products/acrobat/apsb23-34.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?

Yes. This vulnerability is being exploited in the wild.