Adobe Security Bulletin APSB19-14 addresses a file upload restriction bypass vulnerability that has been exploited in the wild.
Background
On March 1, Adobe published APSB19-14, an out-of-band security bulletin to address a critical vulnerability in Adobe ColdFusion. Affected versions include ColdFusion 2018 Update 2 and earlier, ColdFusion 2016 Update 9 and earlier, and ColdFusion 11 Update 17 and earlier.
Analysis
This security bulletin addresses CVE-2019-7816, a file upload restriction bypass vulnerability. Exploitation of this vulnerability could allow an attacker to gain arbitrary code execution “in the context of the running ColdFusion service.” According to Adobe, they are aware of a report that this vulnerability has been exploited in the wild.
In order to exploit the vulnerability, an attacker would need to be able to upload a malicious file to a directory that is publicly accessible and then execute that file remotely.
Solution
Adobe has released security the following updates for Cold Fusion 2018, 2016 and 11 to address this vulnerability:
Tenable recommends users to upgrade to these versions of ColdFusion as soon as possible.
Additionally, users are advised to modify settings to prevent users from making HTTP requests to directories that contain uploaded files.
Identifying affected systems
A list of Nessus plugins to identify this vulnerability will appear here as they’re released.
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