Bug 2491620 (CVE-2026-15567) - CVE-2026-15567 wildfly: wildfly-iiop: wildfly-jacorb: Wildfly: Pre-auth denial of service on the IIOP listener
Summary: CVE-2026-15567 wildfly: wildfly-iiop: wildfly-jacorb: Wildfly: Pre-auth denia...
Keywords:
Status: NEW
Alias: CVE-2026-15567
Product: Security Response
Classification: Other
Component: vulnerability-draft
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-23 03:08 UTC by OSIDB Bzimport
Modified: 2026-09-22 15:36 UTC (History)
33 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:53644 0 None None None 2026-09-17 17:50:12 UTC
Red Hat Product Errata RHSA-2026:53646 0 None None None 2026-09-17 17:45:33 UTC
Red Hat Product Errata RHSA-2026:53806 0 None None None 2026-09-17 17:44:26 UTC
Red Hat Product Errata RHSA-2026:70228 0 None None None 2026-09-22 12:56:42 UTC
Red Hat Product Errata RHSA-2026:70229 0 None None None 2026-09-22 13:01:17 UTC
Red Hat Product Errata RHSA-2026:70230 0 None None None 2026-09-22 12:59:09 UTC
Red Hat Product Errata RHSA-2026:70277 0 None None None 2026-09-22 15:36:16 UTC

Description OSIDB Bzimport 2026-06-23 03:08:14 UTC 
JBoss EAP's IIOP (Internet Inter-ORB Protocol) subsystem processes security tokens from CORBA clients as part of the CSIv2 (Common Secure Interoperability version 2) handshake. This processing happens before any authentication — triggered by a portable interceptor (SASTargetInterceptor) that fires on every single incoming IIOP request.
 
Two methods in CSIv2Util.java read a length field directly from the attacker-controlled network packet and immediately allocate a Java byte array of that size — with zero bounds checking:


  A single unauthenticated GIOP packet with a crafted length field can cause:
  - OutOfMemoryError — the JVM attempts a ~2 GB heap allocation and crashes
  - NegativeArraySizeException — integer overflow in the length field kills the worker thread
  - Both outcomes are repeatable — the attacker can sustain the DoS by sending packets in a loop
Comment 1 Jon Orris 2026-09-17 17:44:23 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4.25

Via RHSA-2026:53806 https://access.redhat.com/errata/RHSA-2026:53806
Comment 2 Jon Orris 2026-09-17 17:45:30 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9

Via RHSA-2026:53646 https://access.redhat.com/errata/RHSA-2026:53646
Comment 3 Jon Orris 2026-09-17 17:50:09 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7

Via RHSA-2026:53644 https://access.redhat.com/errata/RHSA-2026:53644
Comment 4 Jon Orris 2026-09-22 12:56:40 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Via RHSA-2026:70228 https://access.redhat.com/errata/RHSA-2026:70228
Comment 5 Jon Orris 2026-09-22 12:59:08 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

Via RHSA-2026:70230 https://access.redhat.com/errata/RHSA-2026:70230
Comment 6 Jon Orris 2026-09-22 13:01:14 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Via RHSA-2026:70229 https://access.redhat.com/errata/RHSA-2026:70229
Comment 7 Jon Orris 2026-09-22 15:36:14 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1

Via RHSA-2026:70277 https://access.redhat.com/errata/RHSA-2026:70277
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