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Message-ID: <CAGGkMiuFnMtwuUOeP7zdtf0dryKk0JLHfnHAk0uCzioKWeWKfw@mail.gmail.com>
Date: Wed, 29 Sep 2021 20:20:22 +0200
From: Przemyslaw Roguski <proguski@...hat.com>
To: oss-security@...ts.openwall.com
Subject: CVE-2021-3762 quay/claircore: directory traversal when scanning
 crafted container image

Hello,

A directory traversal vulnerability was found in the ClairCore engine of
Clair.
An attacker can exploit this by supplying a crafted container image which,
when scanned by Clair, allows for arbitrary file write on the filesystem,
potentially allowing for remote code execution.

Red Hat has assigned CVE-2021-3762 to this vulnerability.
These issues have been rated Critical, with a CVSS:
9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

### Affected Versions
ClairCore 0.4.6 release and higher (Clair v4.1.4 and higher)
ClairCore 0.5.3 release and higher (Clair v4.2.1 and higher)

### Fixed Versions
ClairCore v0.4.8 (shipped in Clair v4.1.6)
ClairCore v0.5.5 (shipped in Clair v4.2.3)

### Fixes
https://github.com/quay/claircore/pull/478
https://github.com/quay/clair/pull/1379
https://github.com/quay/clair/pull/1380

## Acknowledgements
Yanir Tsarimi
twitter.com/Yanir_
(Orca Security)


Best regards,
Przemyslaw Roguski

--
Przemyslaw Roguski / Red Hat Product Security

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