CVE-2019-11555

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CVE-2019-11555

Summary:

Details: The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.

References: https://seclists.org/bugtraq/2019/May/40, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/, https://seclists.org/bugtraq/2019/May/64, https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html, https://usn.ubuntu.com/3969-1/, https://usn.ubuntu.com/3969-2/, https://security.gentoo.org/glsa/201908-25, https://www.debian.org/security/2019/dsa-4450, https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt, https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc, https://w1.fi/security/2019-5/, https://www.openwall.com/lists/oss-security/2019/04/18/6, http://www.openwall.com/lists/oss-security/2019/04/26/1