CVE-2019-9498

NameCVE-2019-9498
DescriptionThe implementations of EAP-PWD in hostapd EAP Server, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. An attacker may be able to use invalid scalar/element values to complete authentication, gaining session key and network access without needing or learning the password. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1867-1, DSA-4430-1
Debian Bugs926801

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
wpa (PTS)jessie, jessie (lts)2.3-1+deb8u15fixed
stretch (security)2:2.4-1+deb9u9fixed
stretch (lts), stretch2:2.4-1+deb9u11fixed
buster, buster (lts)2:2.7+git20190128+0c1e29f-6+deb10u5fixed
buster (security)2:2.7+git20190128+0c1e29f-6+deb10u4fixed
bullseye (security), bullseye2:2.9.0-21+deb11u2fixed
bookworm (security), bookworm2:2.10-12+deb12u2fixed
sid, trixie2:2.10-22fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
wpasourcewheezy(unfixed)end-of-life
wpasourcejessie2.3-1+deb8u8DLA-1867-1
wpasourcestretch2:2.4-1+deb9u3DSA-4430-1
wpasource(unstable)2:2.7+git20190128+0c1e29f-4926801

Notes

https://w1.fi/security/2019-4/eap-pwd-missing-commit-validation.txt
Patches: https://w1.fi/security/2019-4/

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