The XML Signature specification allows for HMAC truncation, which may
allow a remote attacker to bypass authentication.
This issue was disclosed to public few minutes before [1].
If you are a Carbon 1.5.1 base product user please apply the security
fix available at [2].
Also please note that this issue is *NOT* present in Carbon 2.0.0 base
releases done recently.
Thanks & regards.
-Prabath
[1]:
http://www.kb.cert.org/vuls/id/466161[2]:
http://dist.wso2.org/products/carbon/1.5.1/service_pack/WSO2-CARBON-1.5.1-SERVICE-PACK-1.zip[3]:
https://www.wso2.org/downloads/carbon/security_hot_fix_______________________________________________
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