CVE-2022-41237
CRITICALCVE-2022-41237 is a critical-severity (CVSS 9.8) Deserialization of Untrusted Data vulnerability in jenkins dotci. O3 Security detects and blocks CVE-2022-41237 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.
Jenkins DotCi Plugin 2.40.00 and earlier does not configure its YAML parser to prevent the instantiation of arbitrary types, resulting in a remote code execution vulnerability.
Description
Jenkins DotCi Plugin 2.40.00 and earlier does not configure its YAML parser to prevent the instantiation of arbitrary types, resulting in a remote code execution vulnerability.
Affected Products
dotcijenkinsDetection & mitigation playbook
Vendor / applianceDetect
Inventory every jenkins dotci deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2022-41237 yet — track the jenkins dotci advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2022-41237 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2022-41237. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2022-41237 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2022-41237 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.