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 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | 3.9 | 5.9 |
CVSS 2.0
Severity: HIGH
Problem Type: CWE-787,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| c-ares | c-ares | 1.1.0 |
| c-ares | c-ares | 1.5.1 |
| debian | debian_linux | 8.0 |
| c-ares | c-ares | 1.3.1 |
| c-ares | c-ares | 1.7.0 |
| c-ares | c-ares | 1.2.1 |
| c-ares | c-ares | 1.8.0 |
| c-ares | c-ares | 1.5.0 |
| c-ares | c-ares | 1.7.1 |
| c-ares | c-ares | 1.5.3 |
| c-ares | c-ares | 1.5.2 |
| c-ares | c-ares | 1.10.0 |
| canonical | ubuntu_linux | 16.04 |
| c-ares | c-ares | 1.9.1 |
| c-ares | c-ares | 1.9.0 |
| c-ares | c-ares | 1.0.0 |
| canonical | ubuntu_linux | 16.10 |
| canonical | ubuntu_linux | 12.04 |
| c-ares | c-ares | 1.7.3 |
| c-ares | c-ares | 1.3.0 |
| c-ares | c-ares | 1.4.0 |
| c-ares_project | c-ares | 1.11.0 |
| c-ares | c-ares | 1.7.5 |
| nodejs | node.js | * |
| c-ares | c-ares | 1.7.2 |
| canonical | ubuntu_linux | 14.04 |
| c-ares | c-ares | 1.2.0 |
| c-ares | c-ares | 1.3.2 |
| c-ares | c-ares | 1.6.0 |
| c-ares | c-ares | 1.7.4 |
The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | 3.9 | 3.6 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-200,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| c-ares | c-ares | 1.9.1 |
| c-ares | c-ares | 1.8.0 |
| c-ares | c-ares | 1.9.0 |
| nodejs | node.js | * |
| c-ares_project | c-ares | 1.11.0 |
| c-ares | c-ares | 1.10.0 |
| c-ares | c-ares | 1.12.0 |