CWE
22
Advisory Published
CVE Published
Updated

CVE-2021-3762: Path Traversal

First published: Fri Sep 03 2021(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/quay/claircore<0.5.5
0.5.5
redhat/quay/claircore<0.4.8
0.4.8
Redhat Clair>=0.4.6<0.4.8
Redhat Clair>=0.5.3<0.5.5
Redhat Quay=3.5.6

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Frequently Asked Questions

  • What is CVE-2021-3762?

    CVE-2021-3762 is a directory traversal vulnerability found in the ClairCore engine of Clair.

  • How can an attacker exploit CVE-2021-3762?

    An attacker can exploit CVE-2021-3762 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.

  • What is the severity of CVE-2021-3762?

    CVE-2021-3762 has a severity rating of 9.8 (Critical).

  • Which software versions are affected by CVE-2021-3762?

    The affected software versions are Quay/ClairCore 0.5.5 (up to exclusive), Quay/ClairCore 0.4.8 (up to exclusive), Redhat Clair (version 0.4.6 to 0.4.8), Redhat Clair (version 0.5.3 to 0.5.5), and Redhat Quay 3.5.6 (exactly).

  • How can I fix CVE-2021-3762?

    To fix CVE-2021-3762, update the affected software to the recommended versions: Quay/ClairCore 0.5.5 or Quay/ClairCore 0.4.8.

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