| Name | CVE-2015-4146 |
| Description | The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-3397-1 |
| Debian Bugs | 787371 |
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+deb8u15 | fixed |
| stretch (security) | 2:2.4-1+deb9u9 | fixed |
| stretch (lts), stretch | 2:2.4-1+deb9u11 | fixed |
| buster, buster (lts) | 2:2.7+git20190128+0c1e29f-6+deb10u5 | fixed |
| buster (security) | 2:2.7+git20190128+0c1e29f-6+deb10u4 | fixed |
| bullseye (security), bullseye | 2:2.9.0-21+deb11u2 | fixed |
| bookworm (security), bookworm | 2:2.10-12+deb12u2 | fixed |
| sid, trixie | 2:2.10-22 | fixed |
The information below is based on the following data on fixed versions.
Notes
[wheezy] - wpa <not-affected> (Vulnerable code introduced later)
support for fragmentation added in https://w1.fi/cgit/hostap/commit/?id=5ea93947ca67ba83529798b806a15b247cdb2e93
- wpasupplicant <not-affected> (v1.0-v2.4 with CONFIG_EAP_PWD=y)
- hostapd <not-affected> (v1.0-v2.4 with CONFIG_EAP_PWD=y)
http://w1.fi/security/2015-4/
http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt
http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
https://www.openwall.com/lists/oss-security/2015/05/07/5