CVE-2022-32531: Apache BookKeeper: Java Client Uses Connection to Host that Failed Hostname Verification

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-15 · updated 2026-06-17
Weakness: CWE-295

Description

The Apache Bookkeeper Java Client (before 4.14.6 and also 4.15.0) does not close the connection to the bookkeeper server when TLS hostname verification fails. This leaves the bookkeeper client vulnerable to a man in the middle attack. The problem affects BookKeeper client prior to versions 4.14.6 and 4.15.1.

Affected products

Apache Software Foundation Apache BookKeeper: before 4.14.6; 4.15.0, 4.15.0-rc0 — fixed in 4.14.6

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache BookKeeper 4.14.6. Check the vendor advisory for mitigations.

References

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