Denial of service in Redis

1) Input validation error

EUVDB-ID: #VU75177

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28856

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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 - 7.0.10

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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