Vulnerabilities > CVE-2017-15108 - OS Command Injection vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 | |
OS | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
- Command Delimiters An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
- Exploiting Multiple Input Interpretation Layers An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
- Argument Injection An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
- OS Command Injection In this type of an attack, an adversary injects operating system commands into existing application functions. An application that uses untrusted input to build command strings is vulnerable. An adversary can leverage OS command injection in an application to elevate privileges, execute arbitrary commands and compromise the underlying operating system.
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201804-09.NASL description 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. last seen 2020-06-01 modified 2020-06-02 plugin id 108930 published 2018-04-10 reporter This script is Copyright (C) 2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/108930 title GLSA-201804-09 : SPICE VDAgent: Arbitrary command injection NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-144.NASL description 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. last seen 2020-06-05 modified 2018-02-08 plugin id 106667 published 2018-02-08 reporter This script is Copyright (C) 2018-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/106667 title openSUSE Security Update : spice-vdagent (openSUSE-2018-144) NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-0372-1.NASL description 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. last seen 2020-06-01 modified 2020-06-02 plugin id 106652 published 2018-02-07 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106652 title SUSE SLED12 / SLES12 Security Update : spice-vdagent (SUSE-SU-2018:0372-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1052.NASL description 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. last seen 2020-05-06 modified 2018-03-20 plugin id 108456 published 2018-03-20 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108456 title EulerOS 2.0 SP2 : spice-vdagent (EulerOS-SA-2018-1052) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1051.NASL description 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. last seen 2020-05-06 modified 2018-03-20 plugin id 108455 published 2018-03-20 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108455 title EulerOS 2.0 SP1 : spice-vdagent (EulerOS-SA-2018-1051)