CVE-2019-9578 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part2/ https://developers.yubico.com/libu2f-host/Release_Notes.html https://github.com/Yubico/libu2f-host/commit/e4bb58cc8b6202a421e65f8230217d8ae6e16eb5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMA4H6AZFYIR3LA5VKKEJZNCCIVMUCFQ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S4YCFMSNMXZ7XC4U6WXPQA7JCXC6VOAJ/ https://security.gentoo.org/glsa/202004-15

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5