RSA Signature Forgery in NSS

ID MFSA2014-73
Type mozilla
Reporter Mozilla Foundation
Modified 2014-09-24T00:00:00


Antoine Delignat-Lavaud, security researcher at Inria Paris in team Prosecco, reported an issue in Network Security Services (NSS) libraries affecting all versions. He discovered that NSS is vulnerable to a variant of a signature forgery attack previously published by Daniel Bleichenbacher. This is due to lenient parsing of ASN.1 values involved in a signature and could lead to the forging of RSA certificates. The Advanced Threat Research team at Intel Security also independently discovered and reported this issue. These have been addressed in the NSS releases shipping on affected Mozilla products: