CVE-2023-26438 | BDVDB-2026-208486 Detail

Description#

External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.

Impact#

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Exploit#

History#

1. Version 12023-08-02Record published in the CVE List.
2. Version 22024-08-02Most recent update recorded in the CVE List.