PT-2021-2314 · Adobe · Acrobat Reader+1

Published 2021-02-09 · Updated 2021-09-08 · CVE-2021-21041

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 Acrobat Reader DC versions 2020.013.20074 and earlier Acrobat Reader DC versions 2020.001.30018 and earlier Acrobat Reader DC versions 2017.011.30188 and earlier Adobe Acrobat versions prior to the fixed version

Description The issue is related to a use-after-free vulnerability that allows an unauthenticated attacker to execute arbitrary code in the context of the current user. This can be achieved by leveraging the vulnerability with a specially crafted PDF file, which requires user interaction, such as opening a malicious file.

Recommendations For Acrobat Reader DC versions 2020.013.20074 and earlier, update to a version later than 2020.013.20074 to resolve the issue. For Acrobat Reader DC versions 2020.001.30018 and earlier, update to a version later than 2020.001.30018 to resolve the issue. For Acrobat Reader DC versions 2017.011.30188 and earlier, update to a version later than 2017.011.30188 to resolve the issue. For Adobe Acrobat, update to the fixed version to resolve the issue.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2021-01549

CVE-2021-21041

Affected Products

Acrobat Reader

Acrobat

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2021-21041 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/661681 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21041 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01549 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb21-09.html · Vendor Advisory
• https://t.me/cvenotify/9906 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21041 · Note