#VU70039 Resource exhaustion in containerd - CVE-2022-23471

Vulnerability identifier: #VU70039

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-23471

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
containerd
Other software / Other software solutions

Vendor: containerd

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to an error in containerd CRI stream server when handling terminal resize events. A remote user can request a TTY and force it to fail by sending a faulty command and exhaust memory on the host.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

containerd: 1.0.0 - 1.0.3, 1.1.0 - 1.1.8, 1.2.0 - 1.2.14, 1.3.0 - 1.3.10, 1.4.0 - 1.4.13, 1.5.0 - 1.5.15, 1.6.0 - 1.6.11

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External links
http://github.com/containerd/containerd/security/advisories/GHSA-2qjp-425j-52j9
http://github.com/containerd/containerd/commit/a05d175400b1145e5e6a735a6710579d181e7fb0

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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.