#VU72634 Resource exhaustion in Redis - CVE-2022-36021

Vulnerability identifier: #VU72634

Vulnerability risk: Medium

CVSSv4.0: 4.9 [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-2022-36021

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Redis
Server applications / Database software

Vendor: Redis Labs

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when matching commands (like SCAN or KEYS) with a specially crafted pattern. A remote user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Redis: 6.0.0 - 6.0.17, 6.2.0 - 6.2.10, 7.0.0 - 7.0.8

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External links
https://github.com/redis/redis/security/advisories/GHSA-jr7j-rfj5-8xqv
https://github.com/redis/redis/releases/tag/6.0.18
https://github.com/redis/redis/releases/tag/7.0.9
https://github.com/redis/redis/releases/tag/6.2.11

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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.