Local Denial of Service Vulnerability in dbus
Summary
DSA-3161-1: dbus - security update. Affects dbus versions < 1.6.8-1+deb7u6. Fixed in 1.6.8-1+deb7u6. How to fix ↓
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Background
dbus is an asynchronous inter-process communication system used in Debian 7. It allows different processes to communicate with each other on the same machine or across different machines. dbus is responsible for activating system services and handling inter-process communication requests. This vulnerability affects dbus-daemon, the main component of dbus, on systems with systemd-style service activation.
Vulnerability Detail
The vulnerability, identified as CVE-2015-0245, allows a local user to launch a denial of service attack on dbus-daemon. By forging ActivationFailure messages from non-root processes, the attacker can trick dbus-daemon into believing that systemd failed to activate a system service. As a result, dbus-daemon sends an error reply back to the requester, causing a denial of service.
How To Fix
Minimum fixed version
1.6.8-1+deb7u6
This is the first release that contains the fix.
sudo apt-get install --only-upgrade dbusTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability.
Conclusion
The local denial of service vulnerability in dbus can be fixed by upgrading the dbus package to the recommended versions. It is important to keep software up to date to ensure the security and stability of the system. For further support on vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for dbus →
FAQ
dbus is an asynchronous inter-process communication system used in Debian 7. It allows different processes to communicate with each other on the same machine or across different machines.
Systemd-style service activation is a method used by dbus-daemon to activate system services. It is commonly used in systems with systemd as the init system.
The vulnerability allows a local user to launch a denial of service attack on dbus-daemon, causing it to send error replies and potentially disrupting inter-process communication.
No, the vulnerability can only be exploited by a local user on the affected system.
Yes, upgrading the dbus package to the recommended versions will fix the vulnerability.
Related vulnerabilities
Recent vulnerabilities recorded for dbus.
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