漏洞描述
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.
影响产品
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:1593↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:2857↗github.comhttps://github.com/memcached/memcached/issues/348↗usn.ubuntu.comhttps://usn.ubuntu.com/3588-1/↗www.synology.comhttps://www.synology.com/support/security/Synology_SA_18_07↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:1627↗github.comhttps://github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974↗github.comhttps://github.com/memcached/memcached/wiki/ReleaseNotes156↗access.redhat.comhttps://access.redhat.com/errata/RHBA-2018:2140↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:2331↗blogs.akamai.comhttps://blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.html↗twitter.comhttps://twitter.com/dormando/status/968579781729009664↗www.debian.orghttps://www.debian.org/security/2018/dsa-4218↗