Vulnerability identifier: #VU26643

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10696

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
buildah
Client/Desktop applications / Software for system administration

Vendor: Container Projects

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can trick a victim to build a malicious container image hosted on an HTTP(s) server and then write files to the user's system anywhere that the user has permissions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

buildah: 0.1 - 1.14.3

---

External links
http://access.redhat.com/security/cve/cve-2020-10696
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10696
http://github.com/containers/buildah/pull/2245

---

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.