Vulnerability · Published May 14, 2021 · Assigned by redhat
CVE-2020-27833
High 7.1
In plain English
A high-severity improper input validation in openshift/oc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | openshift/oc | up to & including openshift-clients-4.7.0-202104250659.p0.git.95881af |
Weakness: CWE-20
References
- https://access.redhat.com/security/cve/CVE-2020-27833 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1905945 x_refsource_MISC