Path traversal in Red Hat Quay claircore

1) Path traversal

EUVDB-ID: #VU56930

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3762

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to write arbitrary files to the system.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can supply a specially crafted container image which, when scanned by Clair, will allow to write arbitrary files on he filesystem.

Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Quay: 3.5.0 - 3.5.6

External links

http://access.redhat.com/errata/RHSA-2021:3665

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.