#VU74843 Time-of-check Time-of-use (TOCTOU) Race Condition in Podman - CVE-2023-0778

Vulnerability identifier: #VU74843

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-0778

CWE-ID: CWE-367

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Podman
Universal components / Libraries / Libraries used by multiple products

Vendor: Container Projects

Description

The vulnerability allows a remote attacker to gain compromise the affected system.

The vulnerability exists due to a race condition. A remote attacker can replace a normal file in a volume with a symlink while exporting the volume, allowing for access to arbitrary files on the host file system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Podman: 4.0.0 rc1 - 4.4.1

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2168256

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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.