#VU11194 Network amplification in memcached - CVE-2018-1000115

Vulnerability identifier: #VU11194

Vulnerability risk: Low

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2018-1000115

CWE-ID: CWE-406

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
memcached
Server applications / Web servers

Vendor: Memcached

Description
The vulnerability allows a remote unauthenticated attacker to conduct DDoS amplification attack against the target system.

The weakness exists due to insufficient control of network message volume. A remote attacker can scan for affected, insecure Memcached servers via UDP port 11211,spoof UDP packets, send a specially crafted request, trigger a response and conduct DDoS amplification attack.

Mitigation
Update to version 1.5.6.

Vulnerable software versions

memcached: 1.5.5

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External links
https://github.com/memcached/memcached/wiki/ReleaseNotes156

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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. However, a fully functional exploit for this vulnerability is available.