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.
ares_parse_naptr_reply()
{ "binaries": [ { "binary_name": "libc-ares2", "binary_version": "1.10.0-2ubuntu0.2" } ], "availability": "No subscription required" }
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-1000381.json"
{ "binaries": [ { "binary_name": "libc-ares2", "binary_version": "1.10.0-3ubuntu0.2" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "nodejs", "binary_version": "4.2.6~dfsg-1ubuntu4.2+esm1" }, { "binary_name": "nodejs-legacy", "binary_version": "4.2.6~dfsg-1ubuntu4.2+esm1" } ], "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro" }