Bug 2161237 (CVE-2023-22496) - CVE-2023-22496 netdata: Netdata Streaming Alert Command Injection
Summary: CVE-2023-22496 netdata: Netdata Streaming Alert Command Injection
Alias: CVE-2023-22496
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 2161238 2161239
TreeView+ depends on / blocked
Reported: 2023-01-16 11:33 UTC by Avinash Hanwate
Modified: 2023-01-20 19:23 UTC (History)
0 users

Fixed In Version: netdata 1.36.0-409, netdata 1.37
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Clone Of:
Last Closed: 2023-01-20 19:23:25 UTC

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Description Avinash Hanwate 2023-01-16 11:33:12 UTC
Netdata is an open source option for real-time infrastructure monitoring and troubleshooting. An attacker with the ability to establish a streaming connection can execute arbitrary commands on the targeted Netdata agent. When an alert is triggered, the function `health_alarm_execute` is called. This function performs different checks and then enqueues a command by calling `spawn_enq_cmd`. This command is populated with several arguments that are not sanitized. One of them is the `registry_hostname` of the node for which the alert is raised. By providing a specially crafted `registry_hostname` as part of the health data that is streamed to a Netdata (parent) agent, an attacker can execute arbitrary commands at the remote host as a side-effect of the raised alert. Note that the commands are executed as the user running the Netdata Agent. This user is usually named `netdata`. The ability to run arbitrary commands may allow an attacker to escalate privileges by escalating other vulnerabilities in the system, as that user. The problem has been fixed in: Netdata agent v1.37 (stable) and Netdata agent v1.36.0-409 (nightly). As a workaround, streaming is not enabled by default. If you have previously enabled this, it can be disabled. Limiting access to the port on the recipient Agent to trusted child connections may mitigate the impact of this vulnerability.


Comment 1 Avinash Hanwate 2023-01-16 11:33:36 UTC
Created netdata tracking bugs for this issue:

Affects: epel-all [bug 2161239]
Affects: fedora-all [bug 2161238]

Comment 2 Product Security DevOps Team 2023-01-20 19:23:23 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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