7.5

CVE-2017-5637: apache software foundation apache zookeeper

Modified
AliasesUBUNTU-CVE-2017-5637DEBIAN-CVE-2017-5637DLA-986-1
Published 10-10-2017Last modified 17-09-2024

Vulnerability summary

CVE-2017-5637 is a high (CVSS 7.5) vulnerability in apache software foundation apache zookeeper. EPSS estimates a 73.06% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (exploit-database, 02-07-2017)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
73.06%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
SUSE-SU-2020:1066-1USN-4789-1

Timeline

  1. 10-10-2017
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

73.06%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 73.06% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • exploit-databasedosmultipleUnverified

    Zookeeper 3.5.2 Client - Denial of Service

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
  • zookeeper< 3.4.9-3 | < 3.4.5+dfsg-2+deb8u2 | < 3.4.5+dfsg-2+deb7u1
  • debian_linuxEOL8.0
Apache1 product
  • zookeeperEOL3.4.0 | 3.4.1 | 3.4.2 | 3.4.3 | 3.4.4 | 3.4.5 | 3.4.6 | 3.4.7 | 3.4.8 | 3.4.9 | 3.5.0 | 3.5.1 | 3.5.2
Apache software foundation1 product
Org.apache.zookeeper1 product
  • zookeeper≥ 3.4.0, < 3.4.10 | ≥ 3.5.0, < 3.5.3
Ubuntu1 product
  • zookeeper< 3.4.5+dfsg-1ubuntu0.1~esm1 | < 3.4.8-1ubuntu0.1~esm1

5 vendors · 6 products

References

21 links
Show all 21 references