Vulnerability identifier: #VU58522

Vulnerability risk: Medium

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

CVE-ID: CVE-2021-43784

CWE-ID: CWE-190

Exploitation vector: 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 execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in netlink bytemsg length field. A remote authenticated attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

runc: 1.0.0 - 1.0.2

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External links
http://github.com/opencontainers/runc/releases/tag/v1.0.3
http://github.com/opencontainers/runc/security/advisories/GHSA-v95c-p5hm-xq8f

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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 Internet.

Is there known malware, which exploits this vulnerability?

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