DescriptionThe implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information from a side-channel attack that can be used for full password recovery.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs934180

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
wpa (PTS)stretch2:2.4-1+deb9u6fixed
stretch (security)2:2.4-1+deb9u9fixed
buster, buster (security)2:2.7+git20190128+0c1e29f-6+deb10u3fixed
bullseye, sid2:2.9.0-21fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
wpasourcejessie(not affected)
wpasourcestretch(not affected)


[stretch] - wpa <not-affected> (Introduced in 2.5)
[jessie] - wpa <not-affected> (Introduced in 2.5)
Added in v2.5:
"added support for Brainpool Elliptic Curves with SAE"

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