#VU80576 Input validation error in memcached - CVE-2022-48571

Vulnerability identifier: #VU80576

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-48571

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
memcached
Server applications / Web servers

Vendor: Memcached

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

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

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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