CVE Vulnerabilities

CVE-2020-24428

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Nov 05, 2020 | Modified: Sep 08, 2021
CVSS 3.x
7.7
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 2.x
5.1 MEDIUM
AV:N/AC:H/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Acrobat Reader DC versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) for macOS are affected by a time-of-check time-of-use (TOCTOU) race condition vulnerability that could result in local privilege escalation. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Acrobat Adobe * 20.001.30005 (including)
Acrobat_dc Adobe * 17.011.30175 (including)
Acrobat_dc Adobe * 20.012.20048 (including)
Acrobat_reader Adobe * 20.001.30005 (including)
Acrobat_reader_dc Adobe * 17.011.30175 (including)
Acrobat_reader_dc Adobe * 20.012.20048 (including)

Potential Mitigations

References