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-perlUpgrade openssl-devel | Sep 9, 2022 | May 3, 2022 |
| Alpine Linux | — | Upgrade opensslUpgrade openssl3 | Aug 22, 2024 | May 3, 2022 |
| Amazon_linux_2023 | — | Upgrade openssl-perlUpgrade openssl-libsUpgrade openssl-develUpgrade openssl-debugsourceUpgrade openssl-libs-debuginfoUpgrade opensslUpgrade openssl-debuginfo | Feb 17, 2025 | May 3, 2022 |
| Centos_linux | — | Upgrade openssl-debugsourceUpgrade openssl-develUpgrade openssl-debuginfoUpgrade openssl-perlUpgrade openssl-libs-debuginfoUpgrade opensslUpgrade openssl-libs | Sep 1, 2022 | May 3, 2022 |
| Freebsd | — | Upgrade opensslUpgrade openssl-quictlsUpgrade openssl-devel | 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 opensslUpgrade openssl-perlUpgrade openssl-develUpgrade openssl-libs | Aug 31, 2022 | May 3, 2022 |
| Redhat_linux | — | Upgrade opensslUpgrade openssl-debugsourceUpgrade openssl-debuginfoUpgrade openssl-perlUpgrade openssl-libs-debuginfoUpgrade openssl-develUpgrade openssl-libs | Sep 1, 2022 | May 3, 2022 |
| Suse | — | Upgrade libopenssl-3-develUpgrade openssl-3Upgrade openssl-3-docUpgrade libopenssl-3-devel-32bitUpgrade libopenssl3-32bitUpgrade libopenssl3 | 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 |
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