PT-2021-4010 · Adobe · Acrobat Reader+1

Published 2021-07-13 · Updated 2021-08-27 · CVE-2021-28642

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 Acrobat Reader DC versions 2021.005.20054 and earlier Acrobat Reader DC versions 2020.004.30005 and earlier Acrobat Reader DC versions 2017.011.30197 and earlier

Description The issue is related to an out-of-bounds write vulnerability in Adobe Acrobat and Reader. This vulnerability could allow an unauthenticated attacker to achieve arbitrary code execution in the context of the current user by leveraging the vulnerability. Exploitation requires user interaction, where a victim must open a malicious file. The vulnerability may also impact the integrity, availability, and confidentiality of information.

Recommendations For versions 2021.005.20054 and earlier, update to a version later than 2021.005.20054 to resolve the issue. For versions 2020.004.30005 and earlier, update to a version later than 2020.004.30005 to resolve the issue. For 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 and Reader to open files from untrusted sources until a patch is available.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2021-04534

CVE-2021-28642

Affected Products

Acrobat Reader

Acrobat

References · 7

• https://osv.dev/vulnerability/CVE-2021-28642 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28642 · Security Note
• https://bdu.fstec.ru/vul/2021-04534 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb21-51.html · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28642 · Note
• https://t.me/cvenotify/20227 · Telegram Post
• https://vuldb.com/?id.178489 · Note