The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2766-1 advisory.

    - CVE-2020-25650: memory DoS via arbitrary entries in `active_xfers` hash table (bsc#1177780)
    - CVE-2020-25651: possible file transfer DoS and information leak via `active_xfers` hash map     (bsc#1177781)
    - CVE-2020-25652: possibility to exhaust file descriptors in `vdagentd` (bsc#1177782)
    - CVE-2020-25653: UNIX domain socket peer PID retrieved via `SO_PEERCRED` is subject to race condition     (bsc#1177783)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0084 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

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

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

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

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4617-1 advisory.

    Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local     attacker could possibly use this issue to cause SPICE vdagent to consume memory, resulting in a denial of     service. (CVE-2020-25650)

    Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local     attacker could possibly use this issue to cause SPICE vdagent to consume memory, resulting in a denial of     service, or obtain sensitive file contents. (CVE-2020-25651)

    Matthias Gerstner discovered that SPICE vdagent incorrectly handled a large number of client connections.
    A local attacker could possibly use this issue to cause SPICE vdagent to consume resources, resulting in a     denial of service. (CVE-2020-25652)

    Matthias Gerstner discovered that SPICE vdagent incorrectly handled client connections. A local attacker     could possibly use this issue to obtain sensitive information, paste clipboard contents, and transfer     files into the active session. (CVE-2020-25653)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Several vulnerabilities were discovered in spice-vdagent, a spice guest agent for enchancing SPICE integeration and experience.

CVE-2017-15108

spice-vdagent does not properly escape save directory before passing to shell, allowing local attacker with access to the session the agent runs in to inject arbitrary commands to be executed.

CVE-2020-25650

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-2020-25651

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.

CVE-2020-25652

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. 

CVE-2020-25653

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.

For Debian 9 stretch, these problems have been fixed in version 0.17.0-1+deb9u1.

We recommend that you upgrade your spice-vdagent packages.

For the detailed security status of spice-vdagent please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/spice-vdagent

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

The remote Fedora 33 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-09ce0cdfac 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 this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

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.

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-1791 advisory.

    [0.20.0-3]
    - Fix mouse problems in multi-monitor environments under Wayland       Resolves: rhbz#1790904 rhbz#1824610

    [0.20.0-2]
    - Resolves: CVE-2020-25650, CVE-2020-25651, CVE-2020-25652, CVE-2020-25653

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
152654	SUSE SLES12 Security Update : spice-vdagent (SUSE-SU-2021:2766-1)	Nessus	SuSE Local Security Checks	2021/8/18	2026/6/25	medium
236711	Alibaba Cloud Linux 3 : 0084: spice-vdagent (ALINUX3-SA-2022:0084)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	medium
142464	Ubuntu 18.04 LTS / 20.04 LTS : SPICE vdagent vulnerabilities (USN-4617-1)	Nessus	Ubuntu Local Security Checks	2020/11/5	2024/8/29	medium
144956	Debian DLA-2524-1 : spice-vdagent security update	Nessus	Debian Local Security Checks	2021/1/14	2024/1/30	high
146471	Fedora 33 : spice-vdagent (2021-09ce0cdfac)	Nessus	Fedora Local Security Checks	2021/2/12	2024/1/22	medium
257667	Linux Distros Unpatched Vulnerability : CVE-2020-25652	Nessus	Misc.	2025/8/27	2026/7/24	medium
153265	EulerOS 2.0 SP2 : spice-vdagent (EulerOS-SA-2021-2452)	Nessus	Huawei Local Security Checks	2021/9/14	2023/12/1	medium
153060	EulerOS 2.0 SP5 : spice-vdagent (EulerOS-SA-2021-2350)	Nessus	Huawei Local Security Checks	2021/9/7	2023/12/1	medium
149956	Oracle Linux 8 : spice-vdagent (ELSA-2021-1791)	Nessus	Oracle Linux Local Security Checks	2021/5/26	2024/10/23	medium
152281	EulerOS 2.0 SP9 : spice-vdagent (EulerOS-SA-2021-2283)	Nessus	Huawei Local Security Checks	2021/8/9	2023/12/6	medium
152304	EulerOS 2.0 SP9 : spice-vdagent (EulerOS-SA-2021-2257)	Nessus	Huawei Local Security Checks	2021/8/9	2023/12/6	medium

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