CVE-2012-0803: The WS-SP UsernameToken policy in Apache CXF 2.4.5 and 2.5.1 allows remote attackers to bypass authentication by sending an empty UsernameToken as part of a…

PriorityP263critical9.8CVSS 3.0

AVNACLPRNUINSUCHIHAH

EPSS

3.54%

89.2th percentile

The WS-SP UsernameToken policy in Apache CXF 2.4.5 and 2.5.1 allows remote attackers to bypass authentication by sending an empty UsernameToken as part of a SOAP request.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apache	cxf	—	—
apache	cxf	—	—

Detection & IOCsextracted from sources · hover to see the quote

→Authentication bypass is triggered by sending an empty UsernameToken element inside the WS-Security security header of a SOAP request against a WS-SP UsernameToken policy endpoint ↗
→The bypass succeeds because CXF marks the UsernameToken policy requirement as satisfied even when no UsernameToken is present; inspect WS-Security header processing logs for requests where the UsernameToken element is absent or empty yet the policy check passes ↗

·Only Apache CXF versions 2.4.5 and 2.5.1 are vulnerable; earlier versions are not affected and versions 2.4.6 and 2.5.2 include the fix ↗
·Apache CXF as shipped with Red Hat products is not affected by this vulnerability ↗

CVSS provenance

nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

vendor_redhat9.8CRITICAL

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