http://www.theregister.co.uk/content/55/22448.html By John Leyden Posted: 24/10/2001 at 13:49 GMT RSA's Internet authentication product can be bypassed using a combination of Unicode characters which IIS recognises but RSA's security technology fails to decode. RSA's WebID agent is supposed to deny access to a corporate intranet until a user is properly authenticated by a SecurID server. The potentially serious security vulnerability in RSA's product was discovered by ProCheckUp, a UK security consultancy. A variation of the same Unicode directory transversal-style exploit would allow a hacker to obtain a directory listing. Richard Brain, technical director of ProCheckUp, said the vulnerability meant that unauthenticated users could be able to read files and even execute programs on a supposedly secure server. The issue is important because the Web agent of SecurID is used by government organisations and the like to secure access to intranets or for Outlook Web access. RSA Security has issued a new release of the C libraries used in SecurID which guards against the flaw, according to ProCheckUp. (RSA has yet to respond to our call asking for comment). Users are advised to the latest version ACE/Agent for Windows or ACE/Agent for Windows 2000 to protect themselves against the vulnerability. - ISN is currently hosted by Attrition.org To unsubscribe email majordomoat_private with 'unsubscribe isn' in the BODY of the mail.
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