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.

  - 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.

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:1791 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.

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.

This update for spice-vdagent fixes the following issues :

Security issues fixed :

  - CVE-2020-25650: Fixed a memory DoS via arbitrary entries     in `active_xfers` hash table (bsc#1177780).

  - CVE-2020-25651: Fixed a possible file transfer DoS and     information leak via `active_xfers` hash map     (bsc#1177781).

  - CVE-2020-25652: Fixed a possibility to exhaust file     descriptors in `vdagentd` (bsc#1177782).

  - CVE-2020-25653: Fixed a race condition when the UNIX     domain socket peer PID retrieved via `SO_PEERCRED`     (bsc#1177783).

This update was imported from the SUSE:SLE-15-SP2:Update update project.

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

  - spice-vdagent: memory DoS via arbitrary entries in active_xfers hash table (CVE-2020-25650)

  - spice-vdagent: possible file transfer DoS and information leak via active_xfers hash map (CVE-2020-25651)

  - spice-vdagent: possibility to exhaust file descriptors in vdagentd (CVE-2020-25652)

  - spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is subject to race condition     (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 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.

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 AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2021:1791 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 version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2022:0084 advisory.

    Package updates are available for TencentOS Server 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 Tencent 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 relies on the presence of the package as reported by the vendor.

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	2023/7/13	medium
184744	Rocky Linux 8 : spice-vdagent (RLSA-2021:1791)	Nessus	Rocky Linux Local Security Checks	2023/11/6	2023/11/6	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
142915	openSUSE Security Update : spice-vdagent (openSUSE-2020-1898)	Nessus	SuSE Local Security Checks	2020/11/17	2024/2/8	medium
149754	CentOS 8 : spice-vdagent (CESA-2021:1791)	Nessus	CentOS Local Security Checks	2021/5/19	2023/12/29	medium
152709	SUSE SLES15 Security Update : spice-vdagent (SUSE-SU-2021:2803-1)	Nessus	SuSE Local Security Checks	2021/8/21	2023/7/13	medium
154374	EulerOS 2.0 SP3 : spice-vdagent (EulerOS-SA-2021-2617)	Nessus	Huawei Local Security Checks	2021/10/25	2023/11/28	medium
157500	AlmaLinux 8 : spice-vdagent (ALSA-2021:1791)	Nessus	Alma Linux Local Security Checks	2022/2/9	2023/11/13	medium
239625	TencentOS Server 3: spice-vdagent (TSSA-2022:0084)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	medium
257481	Linux Distros Unpatched Vulnerability : CVE-2020-25653	Nessus	Misc.	2025/8/27	2025/8/27	medium

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