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SUSE SLES15 Security Update : spice-vdagent (SUSE-SU-2021:2803-1)

medium Nessus Plugin ID 152709

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Synopsis

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

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2803-1 advisory.

 - A flaw was found in the way the spice-vdagentd daemon handled file transfers from the host system to the virtual machine. Any unprivileged local guest user with access to the UNIX domain socket path `/run/spice- vdagentd/spice-vdagent-sock` could use this flaw to perform a memory denial of service for spice-vdagentd or even other processes in the VM system. The highest threat from this vulnerability is to system availability. This flaw affects spice-vdagent versions 0.20 and previous versions. (CVE-2020-25650)

 - A flaw was found in the SPICE file transfer protocol. File data from the host system can end up in full or in parts in the client connection of an illegitimate local user in the VM system. Active file transfers from other users could also be interrupted, resulting in a denial of service. The highest threat from this vulnerability is to data confidentiality as well as system availability. This flaw affects spice-vdagent versions 0.20 and prior. (CVE-2020-25651)

 - A flaw was found in the spice-vdagentd daemon, where it did not properly handle client connections that can be established via the UNIX domain socket in `/run/spice-vdagentd/spice-vdagent-sock`. Any unprivileged local guest user could use this flaw to prevent legitimate agents from connecting to the spice-vdagentd daemon, resulting in a denial of service. The highest threat from this vulnerability is to system availability. This flaw affects spice-vdagent versions 0.20 and prior. (CVE-2020-25652)

 - A race condition vulnerability was found in the way the spice-vdagentd daemon handled new client connections. This flaw may allow an unprivileged local guest user to become the active agent for spice- vdagentd, possibly resulting in a denial of service or information leakage from the host. The highest threat from this vulnerability is to data confidentiality as well as system availability. This flaw affects spice-vdagent versions 0.20 and prior. (CVE-2020-25653)

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

Solution

Update the affected spice-vdagent package.

See Also

https://bugzilla.suse.com/1177780

https://bugzilla.suse.com/1177781

https://bugzilla.suse.com/1177782

https://bugzilla.suse.com/1177783

https://www.suse.com/security/cve/CVE-2020-25650

https://www.suse.com/security/cve/CVE-2020-25651

https://www.suse.com/security/cve/CVE-2020-25652

https://www.suse.com/security/cve/CVE-2020-25653

http://www.nessus.org/u?9db14a22

Plugin Details

Severity: Medium

ID: 152709

File Name: suse_SU-2021-2803-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 8/21/2021

Updated: 7/13/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

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

CVSS Score Source: CVE-2020-25653

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.8

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

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

CVSS Score Source: CVE-2020-25651

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:spice-vdagent, cpe:/o:novell:suse_linux:15

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/20/2021

Vulnerability Publication Date: 11/25/2020

Reference Information

CVE: CVE-2020-25650, CVE-2020-25651, CVE-2020-25652, CVE-2020-25653

SuSE: SUSE-SU-2021:2803-1