Is CVE-2022-1473 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 3%.

What products does CVE-2022-1473 affect?

Tracked products affected include OpenSSL. Check the version you run to see whether it is affected.

How do I fix CVE-2022-1473?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2022-1473

Q: What is CVE-2022-1473?

CVE-2022-1473 is a high-severity software vulnerability (CWE-459) with a CVSS score of 7.5. 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 perio

HIGH severity · CVSS 7.5 · CWE-459

7.5CVSS HIGH

Summary

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).

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)3%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

OpenSSL

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

CVE-2022-1473

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information