CVE-2017-5637
CVE-2017-5637
Vexday Risk Score
45Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS —EPSS 73.7%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado
Lifecycle
02 Jul 2017Public PoC
10 Oct 2017Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10, 3.5.3, and later.
Affected products
Apache Software Foundation · Apache ZooKeeperpublic PoCs found — 1
exploitdbwww.exploit-db.com/exploits/42294unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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Talk to TrueHacking →References
https://access.redhat.com/errata/RHSA-2017:2477https://access.redhat.com/errata/RHSA-2017:3354https://access.redhat.com/errata/RHSA-2017:3355https://issues.apache.org/jira/browse/ZOOKEEPER-2693https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3Ehttps://lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370%40%3Cdev.zookeeper.apache.org%3Ehttps://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3Ehttps://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3Ehttps://www.oracle.com/security-alerts/cpujul2020.htmlhttps://www.oracle.com//security-alerts/cpujul2021.htmlhttp://www.debian.org/security/2017/dsa-3871http://www.securityfocus.com/bid/98814