Vulnerability in Apache Software Foundation Apache WSS4J

[ Description ]Official description

An integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7FFFFFFF; WSS4J decodes this while resolving the signature's key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• lists.apache.org/thread.html/sdf0fsphkg4qbj7nh2brjgwvcmd67hctVendor AdvisoryMailing List
• www.openwall.com/lists/oss-security/2026/09/30/14Mailing ListThird Party Advisory