CVE-2019-11555 Null dereference in n/a
An attacker can cause a denial of service in hostapd or wpa_supplicant by sending unexpected EAP-pwd fragments, triggering a NULL pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-11555?
CVE-2019-11555 is a medium-severity vulnerability in n/a, published on 26 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-476
Which versions are affected by CVE-2019-11555?
It affects 2 products.
Products include W1.fi Hostapd, W1.fi Wpa Supplicant.
How do I fix CVE-2019-11555?
Upgrade to a fixed version.
Is CVE-2019-11555 being exploited?
There is no known exploitation of CVE-2019-11555 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2019-11555, DEBIAN-CVE-2019-11555, DSA-4450-1, GHSA-3r3j-9m7c-h35g, UBUNTU-CVE-2019-11555, USN-3969-1 and 1 more.