Privilege escalation in libpod



Published: 2020-02-11 | Updated: 2020-03-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1726
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Podman
Universal components / Libraries / Libraries used by multiple products

Vendor Container Projects

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU25983

Risk: Low

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

CVE-ID: CVE-2020-1726

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in Podman where it incorrectly allows containers when created to overwrite existing files in volumes, even if they are mounted as read-only. When a user runs a malicious container or a container based on a malicious image with an attached volume that is used for the first time, it is possible to trigger the flaw and overwrite files in the volume.T

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Podman: 1.6.0 - 1.8.1 rc3

External links

http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1726


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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