CVE-2015-20110
HIGHCVE-2015-20110 is a high-severity (CVSS 7.5) CWE-307 vulnerability in jhipster jhipster. O3 Security detects and blocks CVE-2015-20110 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.
JHipster generator-jhipster before 2.23.0 allows a timing attack against validateToken due to a string comparison that stops at the first character that is different. Attackers can…
Description
JHipster generator-jhipster before 2.23.0 allows a timing attack against validateToken due to a string comparison that stops at the first character that is different. Attackers can guess tokens by brute forcing one character at a time and observing the timing. This of course drastically reduces the search space to a linear amount of guesses based on the token length times the possible characters.
Affected Products
jhipsterjhipsterDetection & mitigation playbook
Vendor / applianceDetect
Inventory every jhipster jhipster 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.
Fix
Apply the jhipster jhipster security patch or hotfix for CVE-2015-20110 on the affected version, following the vendor advisory for your exact build.
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.
How O3 protects you
O3 detects and blocks CVE-2015-20110 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-2015-20110. 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-2015-20110 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2015-20110 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.