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).
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade openssl-libsUpgrade opensslUpgrade openssl-develUpgrade openssl-perl | Sep 9, 2022 | May 3, 2022 |
| Alpine Linux | — | Upgrade opensslUpgrade openssl3 | Aug 22, 2024 | May 3, 2022 |
| Amazon_linux_2023 | — | Upgrade openssl-libsUpgrade openssl-perlUpgrade openssl-develUpgrade opensslUpgrade openssl-libs-debuginfoUpgrade openssl-debuginfoUpgrade openssl-debugsource | Feb 17, 2025 | May 3, 2022 |
| Centos_linux | — | Upgrade openssl-libs-debuginfoUpgrade openssl-perlUpgrade opensslUpgrade openssl-debuginfoUpgrade openssl-libsUpgrade openssl-develUpgrade openssl-debugsource | Sep 1, 2022 | May 3, 2022 |
| Freebsd | — | Upgrade openssl-quictlsUpgrade openssl-develUpgrade openssl | Nov 4, 2022 | May 4, 2022 |
| Gentoo Linux | — | Upgrade dev-libs/openssl. | Oct 17, 2022 | May 3, 2022 |
| Http Openssl | — | Upgrade to the latest version of OpenSSL | May 4, 2022 | May 3, 2022 |
| Oracle_linux | — | Upgrade openssl-libsUpgrade openssl-develUpgrade openssl-perlUpgrade openssl | Aug 31, 2022 | May 3, 2022 |
| Redhat_linux | — | Upgrade openssl-debuginfoUpgrade openssl-debugsourceUpgrade opensslUpgrade openssl-perlUpgrade openssl-libsUpgrade openssl-develUpgrade openssl-libs-debuginfo | Sep 1, 2022 | May 3, 2022 |
| Suse | — | Upgrade libopenssl-3-develUpgrade openssl-3Upgrade libopenssl3Upgrade libopenssl3-32bitUpgrade openssl-3-docUpgrade libopenssl-3-devel-32bit | Oct 26, 2022 | May 3, 2022 |
| Ubuntu | — | Upgrade libssl3 | May 5, 2022 | May 3, 2022 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 3, 2022 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub