| Name | CVE-2019-11555 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1867-1, DSA-4450-1 |
| Debian Bugs | 927463 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| wpa (PTS) | jessie, jessie (lts) | 2.3-1+deb8u14 | fixed |
| stretch (security) | 2:2.4-1+deb9u9 | fixed |
| stretch (lts), stretch | 2:2.4-1+deb9u10 | fixed |
| buster | 2:2.7+git20190128+0c1e29f-6+deb10u3 | fixed |
| buster (security) | 2:2.7+git20190128+0c1e29f-6+deb10u4 | fixed |
| bullseye | 2:2.9.0-21 | fixed |
| bookworm | 2:2.10-12 | fixed |
| sid, trixie | 2:2.10-21 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| wpa | source | wheezy | (unfixed) | end-of-life | | |
| wpa | source | jessie | 2.3-1+deb8u8 | | DLA-1867-1 | |
| wpa | source | stretch | 2:2.4-1+deb9u4 | | DSA-4450-1 | |
| wpa | source | (unstable) | 2:2.7+git20190128+0c1e29f-5 | | | 927463 |
Notes
https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt
Patches: https://w1.fi/security/2019-5/