Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2015-4852

Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

CriticalExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run WebLogic Server, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by May 3, 2022.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers to execute arbitrary commands via a crafted serialized Java object in T3 protocol traffic to TCP port 7001, related to oracle_common/modules/com.bea.core.apache.commons.collections.jar. NOTE: the scope of this CVE is limited to the WebLogic Server product.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsSource
WebLogic ServerOracle10.3.6.0.0; 12.1.2.0.0; 12.1.3.0.0; 12.2.1.0.0KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2015-4852 scored CVSS 9.8: Oracle WebLogic Server, Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

    CISA lists this as exploited in the wild. Unpatched WebLogic Server systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2015-4852: Oracle WebLogic Server, Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

    An official fix is now available for Oracle WebLogic Server. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2015-4852
  • foxglovesecurity.com http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-h…
  • packetstormsecurity.com http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html
  • openwall.com http://www.openwall.com/lists/oss-security/2015/11/17/19
  • oracle.com http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html
  • oracle.com http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
  • oracle.com http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
  • oracle.com http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
  • oracle.com http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.html
  • oracle.com http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
  • securityfocus.com http://www.securityfocus.com/bid/77539
  • securitytracker.com http://www.securitytracker.com/id/1038292
  • blogs.oracle.com https://blogs.oracle.com/security/entry/security_alert_cve_2015_4852
  • github.com https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py
  • exploit-db.com https://www.exploit-db.com/exploits/42806/
  • exploit-db.com https://www.exploit-db.com/exploits/46628/
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-4852