PT-2021-4007 · Adobe · Acrobat Reader

Published 2021-07-13 · Updated 2021-08-27 · CVE-2021-28641

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Adobe Acrobat Reader DC versions 2021.005.20054 and earlier Adobe Acrobat Reader DC versions 2020.004.30005 and earlier Adobe Acrobat Reader DC versions 2017.011.30197 and earlier

Description The issue is related to a use-after-free vulnerability that could allow an unauthenticated attacker to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction, specifically that a victim must open a malicious file. This vulnerability may impact the confidentiality, integrity, and availability of protected information.

Recommendations For Adobe Acrobat Reader DC versions 2021.005.20054 and earlier, update to a version later than 2021.005.20054 to resolve the issue. For Adobe Acrobat Reader DC versions 2020.004.30005 and earlier, update to a version later than 2020.004.30005 to resolve the issue. For Adobe Acrobat Reader DC versions 2017.011.30197 and earlier, update to a version later than 2017.011.30197 to resolve the issue. As a temporary workaround, consider avoiding the use of Adobe Acrobat Reader DC until a patch is available.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2021-04531

CVE-2021-28641

Affected Products

Acrobat Reader

References · 8

• https://osv.dev/vulnerability/CVE-2021-28641 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28641 · Security Note
• https://bdu.fstec.ru/vul/2021-04531 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb21-51.html · Vendor Advisory
• https://t.me/cibsecurity/27660 · Telegram Post
• https://t.me/cvenotify/20228 · Telegram Post
• https://vuldb.com/?id.178488 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28641 · Note