The Mozilla Network Security Services library fails to properly verify RSA signatures. This vulnerability may allow an attacker to forge RSA signatures.
RSA signatures are used to authenticate the source of a message. To prevent RSA signatures from being forged, messages are padded with data to ensure message hashes are adequately sized. The Mozilla Network Security Services (NSS) library fails to properly verify the padding in RSA signatures, ignoring data at the end of a signature. If this data is ignored and an RSA key with a public exponent of three is used, it may be possible to forge the signing key's signature.
For more information refer to Mozilla Foundation Security Advisory 2006-66.
This vulnerability may allow an attacker to forge an RSA signature.
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This vulnerability was reported in Mozilla Foundation Security Advisory 2006-66. Mozilla credits Ulrich Kuehn for providing information concerning this issue.
This document was written by Chris Taschner.
|Date First Published:||2006-11-08|
|Date Last Updated:||2007-01-23 19:48 UTC|