The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

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Advisories
Source ID Title
EUVD EUVD EUVD-2022-3867 The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).
Github GHSA Github GHSA GHSA-g323-fr93-4j3c Resource leakage when decoding certificates and keys
Ubuntu USN Ubuntu USN USN-5402-1 OpenSSL vulnerabilities
Ubuntu USN Ubuntu USN USN-5402-2 OpenSSL vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 05 May 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: openssl

Published:

Updated: 2025-05-05T16:42:05.402Z

Reserved: 2022-04-26T00:00:00.000Z

Link: CVE-2022-1473

cve-icon Vulnrichment

Updated: 2024-08-03T00:03:06.287Z

cve-icon NVD

Status : Modified

Published: 2022-05-03T16:15:18.957

Modified: 2025-05-05T17:17:34.867

Link: CVE-2022-1473

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-05-03T00:00:00Z

Links: CVE-2022-1473 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses