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://www.openwall.com/lists/oss-security/2019/04/26/1
https://w1.fi/security/2019-5/
https://nvd.nist.gov/vuln/detail/CVE-2019-11555

(from redmine: issue id 10417, created on 2019-05-07, closed on 2019-06-20)

• Relations:
  • parent #10413 (closed)
• Changesets:
  • Revision 8caec895 on 2019-06-05T07:30:50Z:

main/wpa_supplicant: security fix (CVE-2019-11555)

Fixes #10417