Denial of service in memcached

1) Input validation error

EUVDB-ID: #VU80576

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48571

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when processing multi-packet uploads in UDP within the resp_has_stack() function in memcached.c. A remote attacker can send specially crafted packets to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

memcached: 0.0.1 - 1.6.7

External links

http://github.com/memcached/memcached/commit/6b319c8c7a29e9c353dec83dc92f01905f6c8966
http://lists.debian.org/debian-lts-announce/2023/09/msg00004.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.