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CVE-2019-11555

Good to know:

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Date: April 26, 2019

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.

Language: C

Severity Score

Related Resources (20)

https://nvd.nist.gov/vuln/detail/CVE-2019-11555
https://www.openwall.com/lists/oss-security/2019/04/18/6
http://www.openwall.com/lists/oss-security/2019/04/26/1
https://seclists.org/bugtraq/2019/May/40
https://seclists.org/bugtraq/2019/May/64
https://security.alpinelinux.org/vuln/CVE-2019-11555
https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
https://www.debian.org/security/2019/dsa-4450
https://security.gentoo.org/glsa/201908-25
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/
https://w1.fi/security/2019-5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/
https://security-tracker.debian.org/tracker/CVE-2019-11555
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-11555
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
https://usn.ubuntu.com/3969-1/
https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt
https://usn.ubuntu.com/3969-2/
https://www.mend.io/vulnerability-database/CVE-2019-11555

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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