Privilege Escalation via Hesiod Library's EUID/UID Comparison Vulnerability

CVE-2016-10151 · MEDIUM Severity

AV:L/AC:M/AU:N/C:C/I:C/A:C

The hesiod_init 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) HESIOD_CONFIG or (2) HES_DOMAIN environment variable and leveraging certain SUID/SGUID binary.

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