PT-2021-6903 · Adobe · Acrobat Reader

Published 2021-07-13 · Updated 2021-09-01 · CVE-2021-35988

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:P/I:N/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, which could allow an unauthenticated attacker to disclose arbitrary memory information in the context of the current user. This requires user interaction, such as opening a malicious file, to exploit. The vulnerability can be leveraged using a specially crafted PDF file, potentially leading to unauthorized access to protected 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 vulnerable Adobe Acrobat and Reader versions to open PDF files from untrusted sources until a patch is available.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2022-02503

CVE-2021-35988

Affected Products

Acrobat Reader

References · 5

• https://osv.dev/vulnerability/CVE-2021-35988 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-35988 · Security Note
• https://bdu.fstec.ru/vul/2022-02503 · Security Note
• https://helpx.adobe.com/security/products/acrobat/apsb21-51.html · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35988 · Note