Description
In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.
References (8)
Core 8
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://developers.yubico.com/libu2f-host/Release_Notes.html
Patch, Third Party Advisory x_refsource_misc
https://github.com/Yubico/libu2f-host/commit/e4bb58cc8b6202a421e65f8230217d8ae6e16eb5
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4YCFMSNMXZ7XC4U6WXPQA7JCXC6VOAJ/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMA4H6AZFYIR3LA5VKKEJZNCCIVMUCFQ/
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html
Various Sources x_refsource_misc
https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part2/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202004-15
Scores
CVSS v3
7.5
EPSS
0.0144
EPSS Percentile
80.9%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-908
Status
published
Products (1)
yubico/libu2f-host
< 1.1.8
Published
Mar 05, 2019
Tracked Since
Feb 18, 2026