PT-2021-3419 · Adobe · Acrobat Reader

Published 2021-01-11 · Updated 2021-09-15 · CVE-2021-28555

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Adobe Acrobat Reader DC versions 2021.001.20150 and earlier Adobe Acrobat Reader DC versions 2020.001.30020 and earlier Adobe Acrobat Reader DC versions 2017.011.30194 and earlier

Description The issue is related to an out-of-bounds read vulnerability that could allow an unauthenticated attacker to access sensitive information in the context of the current user. This can be achieved by exploiting the vulnerability through a specially crafted PDF file, which requires user interaction, such as opening a malicious file. The vulnerability may enable a remote attacker to gain unauthorized access to protected information.

Recommendations For Adobe Acrobat Reader DC versions 2021.001.20150 and earlier, update to a version later than 2021.001.20150 to resolve the issue. For Adobe Acrobat Reader DC versions 2020.001.30020 and earlier, update to a version later than 2020.001.30020 to resolve the issue. For Adobe Acrobat Reader DC versions 2017.011.30194 and earlier, update to a version later than 2017.011.30194 to resolve the issue. As a temporary workaround, consider avoiding the use of Adobe Acrobat Reader DC to open PDF files from untrusted sources until a patch is available.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2021-03271

CVE-2021-28555

Affected Products

Acrobat Reader

References · 6

• https://helpx.adobe.com/security/products/acrobat/apsb21-29.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-28555 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28555 · Security Note
• https://bdu.fstec.ru/vul/2021-03271 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28555 · Note
• https://cybersecurity-help.cz/vdb/SB2021051143 · Note