CVE-2018-1000115 memcached: UDP server support allows spoofed traffic amplification DoS
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
tripleo |
Fix Released
|
Critical
|
Emilien Macchi |
Bug Description
https:/
Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume (Network Amplification, CWE-406) vulnerability in the UDP support of the memcached server that can result in denial of service via network flood (traffic amplification of 1:50,000 has been reported by reliable sources). This attack appear to be exploitable via network connectivity to port 11211 UDP. This vulnerability appears to have been fixed in 1.5.6 due to the disabling of the UDP protocol by default.
It affects TripleO and the way we configure Memcached, we need to harden it following Red Hat recommendations:
- Configure a firewall (already done, but we need to restrict traffic on TCP only and on internal network only).
- Disable UDP
- Restrict memcached to localhost (we can't do that since OpenStack services can run on other nodes).
Details of the solution can be found here: https:/
CVE References
Changed in tripleo: | |
status: | Triaged → In Progress |
description: | updated |
tags: | added: newton-backport-potential ocata-backport-potential pike-backport-potential |
tags: | added: queens-backport-potential |
information type: | Private Security → Public Security |
Changed in tripleo: | |
status: | In Progress → Fix Released |
The patch LGTM