The m_authenticate function in modules/m_sasl.c in UnrealIRCd before 3.2.10.7 and 4.x before 4.0.6 allows remote attackers to spoof certificate fingerprints and consequently log in as another user via a crafted AUTHENTICATE parameter.Referenceshttps://github.com/unrealircd/unrealircd/commit/f473e355e1dc422c4f019dbf86bc50ba1a34a766https://forums.unrealircd.org/viewtopic.php?f=1&t=8588http://www.securityfocus.com/bid/92763http://www.openwall.com/lists/oss-security/2016/09/05/8http://www.openwall.com/lists/oss-security/2016/09/04/3
