The hesiodinit function in lib/hesiod.c in Hesiod 3.2.1 compares EUID with UID to determine whether to use configurations from environment variables, which allows local users to gain privileges via the (1) HESIODCONFIG or (2) HES_DOMAIN environment variable and leveraging certain SUID/SGUID binary.
{ "binaries": [ { "binary_name": "hesiod", "binary_version": "3.2.1-3.1~build0.16.04.1" }, { "binary_name": "libhesiod-dev", "binary_version": "3.2.1-3.1~build0.16.04.1" }, { "binary_name": "libhesiod0", "binary_version": "3.2.1-3.1~build0.16.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "hesiod", "binary_version": "3.2.1-3.1~build0.18.04.1" }, { "binary_name": "libhesiod-dev", "binary_version": "3.2.1-3.1~build0.18.04.1" }, { "binary_name": "libhesiod0", "binary_version": "3.2.1-3.1~build0.18.04.1" } ], "availability": "No subscription required" }