CVE-2016-5017
Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x before 3.5.3, when using the "cmd:" batch mode syntax, allows attackers to have unspecified impact via a long command string.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x before 3.5.3, when using the "cmd:" batch mode syntax, allows attackers to have unspecified impact via a long command string.
- CVSS 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.79% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apache/zookeeper
- Source
- secalert@redhat.com
EPSS moved from 6.8% on 22 October 2026 to 6.8% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://packetstormsecurity.com/files/138755/ZooKeeper-3.4.8-3.5.2-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2016/09/17/3Release Notes, Third Party Advisory
- http://www.securityfocus.com/bid/93044
- https://git-wip-us.apache.org/repos/asf?p=zookeeper.git%3Ba=commitdiff%3Bh=27ecf981a15554dc8e64a28630af7a5c9e2bdf4f
- https://git-wip-us.apache.org/repos/asf?p=zookeeper.git%3Ba=commitdiff%3Bh=f09154d6648eeb4ec5e1ac8a2bacbd2f8c87c14a
- https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
- https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E
- https://lists.apache.org/thread.html/r4b743f407244294f316325458ccaabfce9cd70ca3a6423dbe574035c%40%3Cnotifications.dubbo.apache.org%3E
- https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
- https://www.cloudera.com/documentation/other/security-bulletins/topics/csb_topic_1.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://zookeeper.apache.org/security.html#CVE-2016-5017Vendor Advisory
- http://packetstormsecurity.com/files/138755/ZooKeeper-3.4.8-3.5.2-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2016/09/17/3Release Notes, Third Party Advisory
- http://www.securityfocus.com/bid/93044
- https://git-wip-us.apache.org/repos/asf?p=zookeeper.git%3Ba=commitdiff%3Bh=27ecf981a15554dc8e64a28630af7a5c9e2bdf4f
- https://git-wip-us.apache.org/repos/asf?p=zookeeper.git%3Ba=commitdiff%3Bh=f09154d6648eeb4ec5e1ac8a2bacbd2f8c87c14a
- https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
- https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E
- https://lists.apache.org/thread.html/r4b743f407244294f316325458ccaabfce9cd70ca3a6423dbe574035c%40%3Cnotifications.dubbo.apache.org%3E
- https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
- https://www.cloudera.com/documentation/other/security-bulletins/topics/csb_topic_1.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://zookeeper.apache.org/security.html#CVE-2016-5017Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.