Impact
What kind of vulnerability is it? Who is impacted?
Remote code execution may be possible in web-accessible installations of Homarus in certain configurations.
Patches
Has the problem been patched? What versions should users upgrade to?
The issue has been patched in islandora/crayfish:4.1.0
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The exploit requires making a request against the Homarus's /convert endpoint; therefore, the ability to exploit is much reduced if the microservice is not directly accessible from the Internet, so: Prevent general access from the Internet from hitting Homarus.
Configure auth in Crayfish to be more strongly required, such that requests with Authorization headers that do not validate are rejected before the problematic CLI interpolation occurs.
References
Are there any links users can visit to find out more?
seth-shaw-asu Remediation reviewer
adam-vessey Remediation developer
Impact
What kind of vulnerability is it? Who is impacted?
Remote code execution may be possible in web-accessible installations of Homarus in certain configurations.
Patches
Has the problem been patched? What versions should users upgrade to?
The issue has been patched in
islandora/crayfish:4.1.0Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The exploit requires making a request against the Homarus's
/convertendpoint; therefore, the ability to exploit is much reduced if the microservice is not directly accessible from the Internet, so: Prevent general access from the Internet from hitting Homarus.Configure auth in Crayfish to be more strongly required, such that requests with
Authorizationheaders that do not validate are rejected before the problematic CLI interpolation occurs.References
Are there any links users can visit to find out more?