PT-2021-3418 · Adobe · Acrobat Reader

Published 2021-05-11 · Updated 2021-09-15 · CVE-2021-28557

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 2021.001.20150 and earlier Acrobat Reader DC versions 2020.001.30020 and earlier Acrobat Reader DC versions 2017.011.30194 and earlier

Description The issue is related to an out-of-bounds read vulnerability. An unauthenticated attacker could leverage this vulnerability to leak sensitive system information in the context of the current user. Exploitation of this issue requires user interaction, where a victim must open a malicious file. This vulnerability may also allow a remote attacker to execute arbitrary code in the target system using a specially crafted PDF file.

Recommendations For versions 2021.001.20150 and earlier, update to a version later than 2021.001.20150 to resolve the issue. For versions 2020.001.30020 and earlier, update to a version later than 2020.001.30020 to resolve the issue. For 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 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:2021-03270

CVE-2021-28557

Affected Products

Acrobat Reader

References · 8

• https://helpx.adobe.com/security/products/acrobat/apsb21-29.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-28557 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/664618 · Security Note
• https://bdu.fstec.ru/vul/2021-03270 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-28557 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28557 · Note
• https://cybersecurity-help.cz/vdb/SB2021051143 · Note
• https://t.me/cibsecurity/28233 · Telegram Post