CVE-2020-27833 Information

Description

A Zip Slip vulnerability was found in the oc binary in openshift-clients where an arbitrary file write is achieved by using a specially crafted raw container image (.tar file) which contains symbolic links. The vulnerability is limited to the command oc image extract. If a symbolic link is first created pointing within the tarball this allows further symbolic links to bypass the existing path check. This flaw allows the tarball to create links outside the tarball’s parent directory allowing for executables or configuration files to be overwritten resulting in arbitrary code execution. The highest threat from this vulnerability is to confidentiality integrity as well as system availability. Versions up to and including openshift-clients-4.7.0-202104250659.p0.git.95881af are affected.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1905945 https://access.redhat.com/security/cve/CVE-2020-27833

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.1