Impact: Moderate Public Date: 2019-04-18 CWE: CWE-476 Bugzilla: 1703417: wpa_supplicant: Improper fragmentation reassembly state validation in EAP peer leading to DoS 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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-11555 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 5.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Adjacent Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 8 | wpa_supplicant | Under investigation |
| Red Hat Enterprise Linux 7 | wpa_supplicant | Under investigation |
| Red Hat Enterprise Linux 6 | wpa_supplicant | Under investigation |
| Red Hat Enterprise Linux 5 | wpa_supplicant | Under investigation |
Vulmon