PT-2021-17878 · Adobe · Acrobat Reader

Published 2021-02-09 · Updated 2021-09-14 · CVE-2021-28546

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

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

Description: The issue is related to a missing support for an integrity check, which could allow an unauthenticated attacker to modify content in a certified PDF without invalidating the certification. Exploitation of this issue requires user interaction, as a victim must open the tampered file.

Recommendations: For versions 2020.013.20074 and earlier, update to a version that includes support for an integrity check to prevent modification of certified PDF content. For versions 2020.001.30018 and earlier, update to a version that includes support for an integrity check to prevent modification of certified PDF content. For versions 2017.011.30188 and earlier, update to a version that includes support for an integrity check to prevent modification of certified PDF content.

Fix

Weakness Enumeration

CWE-353

Related Identifiers

CVE-2021-28546

Affected Products

Acrobat Reader

References · 5

• https://helpx.adobe.com/security/products/acrobat/apsb21-09.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28546 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28546 · Vendor Advisory
• https://t.me/cvenotify/12826 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28546 · Note