Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade nodejsUpgrade c-ares | Aug 30, 2017 | Oct 3, 2016 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Oct 3, 2016 |
| Debian | — | Upgrade c-ares | Oct 7, 2016 | Sep 30, 2016 |
| Freebsd | — | Upgrade node010Upgrade node012Upgrade node4 | Nov 14, 2016 | Oct 26, 2016 |
| Gentoo Linux | — | Upgrade net-dns/c-ares. | Oct 30, 2017 | Oct 3, 2016 |
| Huawei Euleros 2_0_sp2 | — | Upgrade c-ares-develUpgrade c-ares | Sep 12, 2019 | Oct 3, 2016 |
| Huawei Euleros 2_0_sp3 | — | Upgrade c-aresUpgrade c-ares-devel | Sep 25, 2019 | Oct 3, 2016 |
| Huawei Euleros 2_0_sp5 | — | Upgrade c-ares-develUpgrade c-ares | Aug 16, 2019 | Oct 3, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Sep 29, 2016 |
| Suse | — | Upgrade libcares-develUpgrade libcares2-32bitUpgrade nodejs4-docsUpgrade npm4Upgrade nodejs4Upgrade c-ares-develUpgrade libcares2Upgrade nodejs4-devel | Nov 9, 2016 | Oct 3, 2016 |
| Ubuntu | — | Upgrade libc-ares2 | Nov 30, 2016 | Oct 3, 2016 |
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