spice-vdagent up to and including 0.17.0 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.

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 host is affected by the vulnerability described in GLSA-201804-09 (SPICE VDAgent: Arbitrary command injection)

    SPICE VDAgent does not properly escape save directory before passing to       shell.
  Impact :

    A local attacker could execute arbitrary commands.
  Workaround :

    There is no known workaround at this time.

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

  - spice-vdagent up to and including 0.17.0 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-2017-15108)

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.

This update for spice-vdagent provides the following fixes :

This security issue was fixed :

  - CVE-2017-15108: Properly escape save directory that is     passed to the shell to prevent local attacker with     access to the session the agent runs from injecting     arbitrary commands to be executed (bsc#1070724).

This non-security issue was fixed :

  - Implement endian swapping, required for big-endian     guests to connect to the spice client successfully.
    (bsc#1012215) This update was imported from the     SUSE:SLE-12-SP2:Update update project.

This update for spice-vdagent provides the following fixes: This security issue was fixed :

  - CVE-2017-15108: Properly escape save directory that is     passed to the shell to prevent local attacker with     access to the session the agent runs from injecting     arbitrary commands to be executed (bsc#1070724).

The update package also includes non-security fixes. See advisory for details.

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

ID	Name	Product	Family	Severity
144956	Debian DLA-2524-1 : spice-vdagent security update	Nessus	Debian Local Security Checks	high
108930	GLSA-201804-09 : SPICE VDAgent: Arbitrary command injection	Nessus	Gentoo Local Security Checks	high
108456	EulerOS 2.0 SP2 : spice-vdagent (EulerOS-SA-2018-1052)	Nessus	Huawei Local Security Checks	high
108455	EulerOS 2.0 SP1 : spice-vdagent (EulerOS-SA-2018-1051)	Nessus	Huawei Local Security Checks	high
106667	openSUSE Security Update : spice-vdagent (openSUSE-2018-144)	Nessus	SuSE Local Security Checks	high
106652	SUSE SLED12 / SLES12 Security Update : spice-vdagent (SUSE-SU-2018:0372-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2017-15108

high

Tenable Plugins

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high

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high