Path traversal in buildah (Alpine package)



Published: 2020-06-18
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-10696
CWE-ID CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
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buildah (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Path traversal

EUVDB-ID: #VU26643

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 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

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 (Alpine package): 1.14.9-r0

External links

http://git.alpinelinux.org/aports/commit/?id=21261f2052767eaa4469b7a53a5da0c8b067c860


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.



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