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openSUSE 15 Security Update : libu2f-host (openSUSE-SU-2021:1755-1)

medium Nessus Plugin ID 151710

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1755-1 advisory.

 - Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use.
 It is not possible to perform this attack with a genuine YubiKey. (CVE-2018-20340)

 - 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. (CVE-2019-9578)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected libu2f-host-devel, libu2f-host0 and / or u2f-host packages.

See Also

https://bugzilla.suse.com/1124781

https://bugzilla.suse.com/1128140

https://bugzilla.suse.com/1184648

http://www.nessus.org/u?ff873bed

https://www.suse.com/security/cve/CVE-2018-20340

https://www.suse.com/security/cve/CVE-2019-9578

Plugin Details

Severity: Medium

ID: 151710

File Name: openSUSE-2021-1755.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/16/2021

Updated: 7/16/2021

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2018-20340

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:opensuse:15.3, p-cpe:/a:novell:opensuse:libu2f-host-devel, p-cpe:/a:novell:opensuse:libu2f-host0, p-cpe:/a:novell:opensuse:u2f-host

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/10/2021

Vulnerability Publication Date: 3/5/2019

Reference Information

CVE: CVE-2018-20340, CVE-2019-9578