c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade nodejs-packaging-bundlerUpgrade c-aresUpgrade nodejs-develUpgrade nodejsUpgrade nodejs-docsUpgrade nodejs-libsUpgrade nodejs-nodemonUpgrade nodejs-full-i18nUpgrade c-ares-develUpgrade nodejs-packagingUpgrade npm | Jun 16, 2023 | May 25, 2023 |
| Amazon Linux Ami 2 | — | Upgrade ecs-service-connect-agentUpgrade c-ares-debuginfoUpgrade c-aresUpgrade c-ares-devel | Jul 21, 2023 | May 25, 2023 |
| Amazon_linux | — | Upgrade c-ares | Jul 4, 2023 | May 25, 2023 |
| Amazon_linux_2023 | — | Upgrade c-ares-debuginfoUpgrade c-aresUpgrade c-ares-develUpgrade ecs-service-connect-agentUpgrade c-ares-debugsource | Feb 17, 2025 | May 22, 2023 |
| Centos_linux | — | Upgrade c-ares-develUpgrade c-aresUpgrade c-ares-debuginfo | Jun 15, 2023 | May 25, 2023 |
| Debian | — | Upgrade c-ares | Jun 8, 2023 | May 25, 2023 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Aug 11, 2023 |
| Gentoo Linux | — | Upgrade net-dns/c-ares. | Oct 10, 2023 | May 25, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade c-ares | Jul 18, 2023 | May 25, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade c-ares | Jan 10, 2024 | May 25, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade c-aresUpgrade c-ares-devel | Jan 10, 2024 | May 25, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade c-ares | Aug 9, 2023 | May 25, 2023 |
| Oracle_linux | — | Upgrade nodejs-libsUpgrade nodejs-full-i18nUpgrade nodejsUpgrade nodejs-packagingUpgrade c-ares-develUpgrade c-aresUpgrade nodejs-develUpgrade nodejs-packaging-bundlerUpgrade nodejs-docsUpgrade nodejs-nodemonUpgrade npm | Jun 14, 2023 | May 22, 2023 |
| Redhat_linux | — | Upgrade nodejs-full-i18nNo solution existsUpgrade nodejsUpgrade nodejs-libs-debuginfoUpgrade nodejs-develUpgrade nodejs-libsUpgrade nodejs-nodemonUpgrade nodejs-docsUpgrade nodejs-debuginfoUpgrade nodejs-packaging-bundlerUpgrade c-ares-develUpgrade npmUpgrade c-aresUpgrade c-ares-debuginfoUpgrade c-ares-debugsourceUpgrade nodejs-packagingUpgrade nodejs-debugsource | Jun 15, 2023 | May 25, 2023 |
| Rocky_linux | — | Upgrade nodejs-debuginfoUpgrade nodejs-full-i18nUpgrade nodejs-develUpgrade nodejs-debugsourceUpgrade c-ares-debugsourceUpgrade nodejsUpgrade c-ares-debuginfoUpgrade npmUpgrade c-ares-develUpgrade c-ares | Mar 5, 2024 | May 25, 2023 |
| Suse | — | Upgrade npm16Upgrade nodejs16Upgrade libcares2Upgrade corepack18Upgrade c-ares-develUpgrade c-ares-utilsUpgrade nodejs16-develUpgrade nodejs16-docsUpgrade nodejs18-develUpgrade nodejs18Upgrade libcares2-32bitUpgrade nodejs18-docsUpgrade npm18Upgrade corepack16Upgrade libcares-devel | May 31, 2023 | May 25, 2023 |
| Ubuntu | — | Upgrade libc-ares2 (Ubuntu Pro)Upgrade libc-ares2 | Jun 15, 2023 | May 25, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 25, 2023 |
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