PT-2021-3938 · Adobe · Acrobat Reader

Published 2021-07-13 · Updated 2021-08-31 · CVE-2021-28637

Positive Technologies (AI Summary)

CVSS v2.0

8.8

High

Base vector

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

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 read vulnerability that could allow an unauthenticated attacker to achieve arbitrary read/write system information in the context of the current user. This requires user interaction, where a victim must open a malicious file. The vulnerability may impact the confidentiality, integrity, and availability of protected information. It can also lead to a memory leak.

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

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2021-04455

CVE-2021-28637

Affected Products

Acrobat Reader

References · 6

• https://bdu.fstec.ru/vul/2021-04455 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28637 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28637 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb21-51.html · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28637 · Note
• https://vuldb.com/?id.178490 · Note