Intrusion PreventionAdobe.Acrobat.CVE-2021-39840.Use.After.Free
Description
This indicates an attack attempt to exploit a Use After Free Vulnerability in Adobe Acrobat and Reader.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted PDF file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted PDF file.
Affected Products
Adobe Acrobat DC Continuous for Windows 2021.005.20060 and earlier
Adobe Acrobat Reader DC Continuous for Windows 2021.005.20060 and earlier
Adobe Acrobat DC Continuous for macOS 2021.005.20058 and earlier
Adobe Acrobat Reader DC Continuous for macOS 2021.005.20058 and earlier
Adobe Acrobat 2020 Classic 2020 for Windows & macOS 2020.004.30006 and earlier
Adobe Acrobat Reader 2020 Classic 2020 for Windows & macOS 2020.004.30006 and earlier
Adobe Acrobat 2017 Classic 2017 for Windows & macOS 2017.011.30199 and earlier
Adobe Acrobat Reader 2017 Classic 2017 for Windows & macOS 2017.011.30199 and earlier
Impact
System Compromise: Remote attackers can gain control of vulnerable systems.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
https://helpx.adobe.com/security/products/acrobat/apsb21-55.html
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
Version Updates
| Date | Version | Status | Detail |
|---|---|---|---|
| 2024-06-24 | 28.813 |
Modified
|
Name:Adobe. Acrobat. Reader. CVE-2021-39840. Use. After. Free:Adobe. Acrobat. CVE-2021-39840. Use. After. Free |
| 2022-05-31 | 20.326 |
Modified
|
Sig Added |
| 2021-10-19 | 18.181 |
Modified
|
Sig Added |
| 2021-09-23 | 18.164 |
Modified
|
Default_action:pass:drop |
| 2021-09-15 | 18.158 |
New
|
| ID | 50757 |
| Created | Sep 15, 2021 |
| Updated | Jun 21, 2024 |
| CVE ID | |
| Risk |
|
| Exploit Prediction Score | 50.75% |
| Default Action | drop |
| Active | |
| Affected OS | Windows, MacOS |
| Affected App | Adobe |
| Profile Type | Buffer Errors |