#VU75177 Input validation error in Redis - CVE-2023-28856

Vulnerability identifier: #VU75177

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-2023-28856

CWE-ID: CWE-20

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 insufficient validation of user-supplied input. A remote user can use the HINCRBYFLOAT command to create an invalid hash field that will crash Redis on access.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Redis: 6.0.0 - 6.0.18, 6.2.0 - 6.2.11, 7.0.0 - 7.0.10

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External links
https://github.com/redis/redis/releases/tag/6.0.19
https://github.com/redis/redis/releases/tag/6.2.12
https://github.com/redis/redis/releases/tag/7.0.11
https://github.com/redis/redis/security/advisories/GHSA-hjv8-vjf6-wcr6

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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.