Adobe has released security updates for Adobe Acrobat and Reader for Windows to resolve an important vulnerability. Successful exploitation could lead to an inadvertent leak of the user’s hashed NTLM password.
Proof-of-concept code for CVE-2018-15979 is publicly available.
Adobe recommends users update their software installations to the latest versions by following the instructions below.
The latest product versions are available to end users via one of the following methods:
- Users can update their product installations manually by choosing Help > Check for Updates.
- The products will update automatically, without requiring user intervention, when updates are detected.
- The full Acrobat Reader installer can be downloaded from the Acrobat Reader Download Center.
For IT administrators (managed environments):
- Download the enterprise installers from ftp://ftp.adobe.com/pub/adobe/, or refer to the specific release note version for links to installers.
- Install updates via your preferred methodology, such as AIP-GPO, bootstrapper, SCUP/SCCM (Windows), or on macOS, Apple Remote Desktop and SSH.
Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version:
|Product||Track||Updated Versions||Platform||Priority Rating||Availability|
|Acrobat Reader DC||Continuous||2019.008.20081
|Acrobat 2017||Classic 2017||2017.011.30106||Windows||1||Windows
|Acrobat Reader DC 2017||Classic 2017||2017.011.30106||Windows||1||Windows
|Acrobat DC||Classic 2015||2015.006.30457
|Acrobat Reader DC||Classic 2015||2015.006.30457||Windows||1||Windows
|Vulnerability Category||Vulnerability Impact||Severity||CVE Number|
|NTLM SSO hash theft||
Please refer to this KB article for more information on mitigating CVE-2018-15979.
Adobe would like to thank The EdgeSpot team (CVE-2018-15979) for reporting this issue and for working with Adobe to help protect our customers.