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MEDIUM severity

CVE-2023-37947

MEDIUM

CVE-2023-37947 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in jenkins openshift login. O3 Security detects and blocks CVE-2023-37947 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

Jenkins OpenShift Login Plugin 1.1.0.227.v27e08dfb_1a_20 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to…

Published
Jul 12, 2023
Updated
Jun 17, 2026
Affected
1 product
Patched
See advisory
Exploits
None indexed
Exploitation data as of Jun 17, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Description

Jenkins OpenShift Login Plugin 1.1.0.227.v27e08dfb_1a_20 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.

Affected Products

1 product · 1 configurations
Application
openshift loginjenkins
< 1.1.0.230.v5d7030b_f5432
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every jenkins openshift login 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 exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Fix

    Apply the jenkins openshift login security patch or hotfix for CVE-2023-37947 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    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.

  4. How O3 protects you

    O3 detects and blocks CVE-2023-37947 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-2023-37947. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Jenkins OpenShift Login Plugin 1.1.0.227.v27e08dfb_1a_20 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.
O3 Security · Runtime Protection

Is CVE-2023-37947 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2023-37947 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

CVE-2023-37947: Openshift Login Open… | O3 Security