CVE-2017-12173

CVE-2017-12173 is a high-severity injection vulnerability in sssd's sysdb_search_user_by_upn_res() function, affecting Fedora and Red Hat systems prior to version 1.16.0. An authenticated attacker could exploit this flaw to retrieve cached password hashes from the local cache in a centralized login environment. With a CVSS score of 8.8, this vulnerability presents a high risk due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.