Comment 20 for bug 1415087
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| Tristan Cacqueray (tristan-cacqueray) wrote Re: Format-guessing and file disclosure in image convert | #20 |
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0e1f616
(Get the code!)
Hum, upon a secondary review it seems that force_raw_image only prevents the convertion from fetch_image, but not from the image backend. Nevermind that note, I guess every nova setups are affected.
Thanks Bastian, is it more clear like that ?
Title: Host file disclosure through qcow2 backing file
Reporter: Bastian Blank (credativ)
Products: Cinder and Nova
Affects: up to 2014.1.3 and 2014.2 versions through 2014.2.2
Description:
Bastian Blank from credativ reported a vulnerability in Cinder and Nova. By overwriting an image with a malicious qcow2 header, an authenticated user may mislead Cinder upload-to-image action, resulting in disclosure of any file from the Cinder server. A similar vulnerability in Nova can also be used by an authenticated user to trick Nova during a snapshot upload, resulting in disclosure of any file for which the Nova process user has access to. All Cinder and Nova setups are affected.