Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| W1.Fi | Hostapd | < 2.8 |
| W1.Fi | Wpa Supplicant | < 2.8 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2019/04/26/1Mailing ListPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://seclists.org/bugtraq/2019/May/40
- https://seclists.org/bugtraq/2019/May/64
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
- https://security.gentoo.org/glsa/201908-25
- https://usn.ubuntu.com/3969-1/
- https://usn.ubuntu.com/3969-2/
- https://w1.fi/security/2019-5/PatchVendor Advisory
- https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fVendor Advisory
- https://www.debian.org/security/2019/dsa-4450
- https://www.openwall.com/lists/oss-security/2019/04/18/6Mailing ListPatchThird Party Advisory
FAQ
What is CVE-2019-11555?
CVE-2019-11555 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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...
How severe is CVE-2019-11555?
CVE-2019-11555 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-11555?
Check the references section above for vendor advisories and patch information. Affected products include: W1.Fi Hostapd, W1.Fi Wpa Supplicant.