CVE-2019-11555
Medium
Description
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.
SeverityMedium
CVSS5.9
Exploit probability—
ProductW1.fi Hostapd
PublishedApr 26, 2019
First seenApr 26, 2019
How to fix
Update
- w1.fi hostapd2.8 or later
- w1.fi wpa_supplicant2.8 or later
Vendor advisories
- usn.ubuntu.com/3969-1/
- usn.ubuntu.com/3969-2/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/
- security.freebsd.org/advisories/FreeBSD-SA-19:03.wpa.asc
- debian.org/security/2019/dsa-4450
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/
- security.gentoo.org/glsa/201908-25
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| w1.fi hostapd | v < 2.8 | 2.8 |
| w1.fi wpa_supplicant | v < 2.8 | 2.8 |
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