CVE-2017-16393: Use After Free
First published: Sat Dec 09 2017(Updated: )
An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. This vulnerability is an instance of a use after free vulnerability in the JavaScript engine. The mismatch between an old and a new object can provide an attacker with unintended memory access -- potentially leading to code corruption, control-flow hijack, or an information leak attack. Successful exploitation could lead to arbitrary code execution.
Credit: psirt@adobe.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Adobe Acrobat Reader | <=11.0.22 | |
| Adobe Acrobat Reader | >=17.0<=17.011.30066 | |
| Adobe Acrobat Reader DC | >=-<=17.012.20098 | |
| Adobe Acrobat Reader DC | >=15.0<=15.006.30355 | |
| Adobe Acrobat Reader Notification Manager | <=11.0.22 | |
| Adobe Acrobat Reader Notification Manager | >=17.0<=17.011.30066 | |
| Adobe Acrobat Reader | >=-<=17.012.20098 | |
| Adobe Acrobat Reader | >=15.0<=15.006.30355 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-16393?
CVE-2017-16393 is considered a critical vulnerability due to the potential for remote code execution.
How do I fix CVE-2017-16393?
To fix CVE-2017-16393, update Adobe Acrobat and Reader to the latest version available.
What types of Adobe products are affected by CVE-2017-16393?
CVE-2017-16393 affects multiple versions of Adobe Acrobat and Reader, including versions 11.0.22 and earlier, along with various DC and Classic versions.
What is a use after free vulnerability in the context of CVE-2017-16393?
A use after free vulnerability occurs when a program continues to use a memory pointer after the memory has been freed, potentially leading to arbitrary code execution.
Is there any workaround for CVE-2017-16393 if I cannot update immediately?
As a temporary workaround for CVE-2017-16393, consider disabling JavaScript in Adobe Acrobat and Reader until a patch can be applied.
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