Vulnerability Details : CVE-2019-11555
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2019-11555
- cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11555
1.64%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11555
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2019-11555
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11555
-
https://www.openwall.com/lists/oss-security/2019/04/18/6
oss-security - wpa_supplicant/hostapd: EAP-pwd message reassembly issue with unexpected fragmentMailing List;Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/
[SECURITY] Fedora 30 Update: hostapd-2.8-1.fc30 - package-announce - Fedora Mailing-Lists
-
https://usn.ubuntu.com/3969-1/
USN-3969-1: wpa_supplicant and hostapd vulnerability | Ubuntu security notices
-
http://www.openwall.com/lists/oss-security/2019/04/26/1
oss-security - Re: wpa_supplicant/hostapd: EAP-pwd message reassembly issue with unexpected fragmentMailing List;Patch;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
[SECURITY] [DLA 1867-1] wpa security update
-
https://security.gentoo.org/glsa/201908-25
hostapd and wpa_supplicant: Denial of Service (GLSA 201908-25) — Gentoo security
-
https://www.debian.org/security/2019/dsa-4450
Debian -- Security Information -- DSA-4450-1 wpa
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/
[SECURITY] Fedora 30 Update: wpa_supplicant-2.8-2.fc30 - package-announce - Fedora Mailing-Lists
-
https://usn.ubuntu.com/3969-2/
USN-3969-2: wpa_supplicant and hostapd vulnerability | Ubuntu security notices
-
https://seclists.org/bugtraq/2019/May/40
Bugtraq: FreeBSD Security Advisory FreeBSD-SA-19:03.wpa
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https://seclists.org/bugtraq/2019/May/64
Bugtraq: [SECURITY] [DSA 4450-1] wpa security update
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https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
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https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt
Vendor Advisory
-
https://w1.fi/security/2019-5/
Index of /security/2019-5Patch;Vendor Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/
[SECURITY] Fedora 29 Update: hostapd-2.8-1.fc29 - package-announce - Fedora Mailing-Lists
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