PT-2021-14343 · Adobe · Acrobat Reader

Published 2021-02-09 · Updated 2023-09-12 · CVE-2021-21088

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 DC versions 2020.013.20074 and earlier Adobe Acrobat Reader DC versions 2020.001.30018 and earlier Adobe Acrobat Reader DC versions 2017.011.30188 and earlier

Description: A Use After Free issue affects the software, allowing an unauthenticated attacker to achieve arbitrary code execution in the context of the current user. This requires user interaction, where a victim must open a malicious file. The vulnerability enables attackers to execute arbitrary code.

Recommendations: For versions 2020.013.20074 and earlier, update to a version later than 2020.013.20074 to resolve the issue. For versions 2020.001.30018 and earlier, update to a version later than 2020.001.30018 to resolve the issue. For versions 2017.011.30188 and earlier, update to a version later than 2017.011.30188 to resolve the issue.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2021-21088

ZDI-21-335

Affected Products

Acrobat Reader

References · 6

• https://zerodayinitiative.com/advisories/ZDI-21-335 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-21088 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb21-09.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21088 · Vendor Advisory
• https://twitter.com/CVEnew/status/1699416727883571704 · Twitter Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21088 · Note