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EulerOS 2.0 SP8 : spice-vdagent (EulerOS-SA-2021-2316)

medium Nessus Plugin ID 152406

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the spice-vdagent package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 - 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 Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected spice-vdagent packages.

See Also

http://www.nessus.org/u?4a65eae5

Plugin Details

Severity: Medium

ID: 152406

File Name: EulerOS_SA-2021-2316.nasl

Version: 1.4

Type: local

Published: 8/10/2021

Updated: 12/4/2023

Supported Sensors: 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:huawei:euleros:spice-vdagent, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/9/2021

Reference Information

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