Vulnerability identifier: #VU53399

Vulnerability risk: Low

CVSSv3.1: 6.6 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-30465

CWE-ID: CWE-254

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
runc
Client/Desktop applications / Other client software

Vendor: Open Container Initiative

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the security features bypass issue. A remote authenticated attacker on the local network can perform a symlink exchange attack and host filesystem being bind-mounted into the container.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

runc: 1.0.0 rc94

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External links
http://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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