PT-2023-6440 · Adobe · Acrobat Reader

Published 2023-04-11 · Updated 2023-04-21 · CVE-2023-26420

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Adobe Acrobat Reader versions 23.001.20093 and earlier Adobe Acrobat Reader versions 20.005.30441 and earlier

Description The issue is related to a use-after-free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction, where a victim must open a malicious file. This vulnerability is associated with the use of memory after it has been freed.

Recommendations For Adobe Acrobat Reader versions 23.001.20093 and earlier, update to a version later than 23.001.20093 to resolve the issue. For Adobe Acrobat Reader versions 20.005.30441 and earlier, update to a version later than 20.005.30441 to resolve the issue. As a temporary workaround, consider avoiding the use of the AcroForm addField function until a patch is available. Restrict access to malicious files to minimize the risk of exploitation.

Fix

Use After Free

Buffer Overflow

Weakness Enumeration

CWE-416

CWE-119

Related Identifiers

BDU:2023-07157

CVE-2023-26420

ZDI-23-431

Affected Products

Acrobat Reader

References · 7

• https://zerodayinitiative.com/advisories/ZDI-23-431 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb23-24.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-07157 · Security Note
• https://osv.dev/vulnerability/CVE-2023-26420 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-26420 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-26420 · Note
• https://t.me/cibsecurity/62023 · Telegram Post