CVE-2017-3248 — Weblogic Server
CRITICALCVE-2017-3248 is a critical-severity (CVSS 9.8) vulnerability in oracle weblogic server. 6 public exploit references exist, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: Core Components). Supported versions that are affected are 10.3.6.0, 12.1.3.0, 12.2.1.0…
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2017-3248.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2017-3248 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).
Where this sits among everything scored
Of 394,803 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.
Description
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: Core Components). Supported versions that are affected are 10.3.6.0, 12.1.3.0, 12.2.1.0 and 12.2.1.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS v3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts).
Affected Products
weblogic serveroracleResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Oracle WebLogic 12.1.2.0 - RMI Registry UnicastRef Object Java Deserialization Remote Code Execution
by bobsecq · Jul 7, 2018
Detection & mitigation playbook
Vendor / applianceDetect
Inventory every oracle weblogic server deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2017-3248 yet — track the oracle weblogic server advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
Frequently Asked Questions
Is CVE-2017-3248 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.