CVE Vulnerabilities

CVE-2021-28639

Use After Free

Published: Aug 20, 2021 | Modified: Nov 21, 2024
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Use-after-free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Acrobat_dc Adobe 15.008.20082 (including) 21.005.20054 (including)
Acrobat_dc Adobe 17.011.30059 (including) 17.011.30197 (including)
Acrobat_dc Adobe 20.001.30005 (including) 20.004.30005 (including)
Acrobat_reader_dc Adobe 15.008.20082 (including) 21.005.20054 (including)
Acrobat_reader_dc Adobe 17.011.30059 (including) 17.011.30197 (including)
Acrobat_reader_dc Adobe 20.001.30005 (including) 20.004.30005 (including)

Potential Mitigations

References