PT-2019-2642 · Yubico+1 · Libu2F-Host+1

Published 2019-02-22 · Updated 2021-07-10 · CVE-2019-9578

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Yubico libu2f-host versions prior to 1.1.8

Description The issue is caused by a buffer overflow in the devs.c file of the Yubico libu2f-host library, which can lead to a denial of service due to incorrect parsing of the response to the init command. This can potentially allow a remote attacker to exploit the vulnerability.

Recommendations For versions prior to 1.1.8, update to version 1.1.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the devs.c file or the init command to minimize the risk of exploitation.

Fix

Use of Uninitialized Resource

Buffer Overflow

Weakness Enumeration

CWE-908

CWE-119

Related Identifiers

BDU:2019-02528

CVE-2019-9578

OPENSUSE-SU-2019:1708-1

OPENSUSE-SU-2019:1725-1

OPENSUSE-SU-2019_1708-1

OPENSUSE-SU-2019_1725-1

OPENSUSE-SU-2021:0799-1

OPENSUSE-SU-2021:1755-1

OPENSUSE-SU-2021_0799-1

OPENSUSE-SU-2021_1755-1

SUSE-SU-2019:1749-1

SUSE-SU-2019:1750-1

SUSE-SU-2021:1755-1

Affected Products

Suse

Libu2F-Host

References · 40

• https://github.com/Yubico/libu2f-host/commit/e4bb58cc8b6202a421e65f8230217d8ae6e16eb5 · Patch
• https://developers.yubico.com/libu2f-host/Release_Notes.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-9578 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1755-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-9578 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-9578 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2019:1725-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:1750-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-9578 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMA4H6AZFYIR3LA5VKKEJZNCCIVMUCFQ · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0799-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:1708-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9578 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02528 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-9578 · Vendor Advisory