CVE-2023-29453
9.8 · CRITICALOverview
CVE-2023-29453 is a critical-severity vulnerability affecting zabbix zabbix-agent2. It was published on October 12, 2023 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template action within a Javascript template literal, the contents of the action can be used to terminate the literal, injecting arbitrary Javascript code into the Go template. As ES6 template literals are rather complex, and themselves can do string interpolation, the decision was made to simply disallow Go template actions from being used inside of them (e.g., "var a = {{.}}"), since there is no obviously safe way to allow this behavior. This takes the same approach as github.com/google/safehtml. With fix, Template. Parse returns an Error when it encounters templates like this, with an ErrorCode of value 12. This ErrorCode is currently unexported but will be exported in the release of Go 1.21. Users who rely on the previous behavior can re-enable it using the GODEBUG flag jstmpllitint
Remediation
Check the references section for vendor advisories and patches from zabbix. Update zabbix-agent2 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| zabbix | zabbix-agent2 | >= 5.0.0, < 5.0.35 | Affected |
Frequently Asked Questions
What is CVE-2023-29453?
CVE-2023-29453 is a critical-severity vulnerability affecting zabbix zabbix-agent2. It was published on October 12, 2023 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2023-29453?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-29453?
Check the references section for vendor advisories and patches from zabbix. Update zabbix-agent2 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-29453?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-29453 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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