Critical Security Advisory: Vulnerability in collectd Packages
Summary
RHSA-2018:0560: Red Hat Security Advisory: collectd security, bug fix, and enhancement update. Affects collectd versions < 0:5.8.0-3.el7. Fixed in 0:5.8.0-3.el7. How to fix ↓
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Background
Collectd is a popular open-source daemon that collects system and application performance metrics and provides a way to store and visualize this data. It is widely used in various environments, including servers and cloud infrastructures, to monitor resource usage and performance. The vulnerability identified in collectd and its related packages poses a risk to the integrity and availability of the data collected, potentially allowing unauthorized access or manipulation of sensitive information.
Vulnerability Detail
The vulnerability, identified as CVE-2017-16820, originates from improper handling of certain inputs within the collectd packages. This flaw can lead to unauthorized access to sensitive data, potential denial of service, and manipulation of metrics collected by the daemon. The CVSS score for this vulnerability is 5.6, indicating a moderate level of risk. Attackers could exploit this vulnerability to gain insights into system performance and potentially disrupt services.
How To Fix
Minimum fixed version
0:5.8.0-3.el7
This is the first release that contains the fix.
sudo dnf update collectdTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can limit access to the collectd daemon by configuring firewall rules to restrict incoming connections. This can help mitigate the risk of exploitation until the packages are updated. For example, use the following command to block access:
sudo firewall-cmd --zone=public --add-rich-rule='rule family="ipv4" source address="<untrusted_ip>" reject'
Conclusion
The identified vulnerability in collectd and its associated packages poses a significant risk to system integrity and data security. It is crucial for users to update their packages to the patched version to mitigate potential threats. Implementing temporary workarounds can help reduce risk until updates are applied.
See every vulnerability recorded for collectd →
FAQ
The vulnerability allows unauthorized access and manipulation of metrics collected by the collectd daemon, potentially leading to data breaches.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The CVSS score for this vulnerability is 5.6, indicating a moderate risk level.
If immediate updates are not possible, implement firewall rules to restrict access to the collectd daemon as a temporary workaround.
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