RE: EEYE: Microsoft ASN.1 Library Length Overflow Heap Corruption
This attack can be performed through various encryption systems such as
Kerberos and almost anything using CERTs... I am not sure about
Microsofts wording in their advisory.
Signed,
Marc Maiffret
Chief Hacking Officer
eEye Digital Security
T.949.349.9062
F.949.349.9538
http://eEye.com/Retina - Network Security Scanner
http://eEye.com/Iris - Network Traffic Analyzer
http://eEye.com/SecureIIS - Stop known and unknown IIS vulnerabilities
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| -----Original Message-----
| From: Joe Blatz [mailto:sd_wireless@xxxxxxxxx]
| Sent: Tuesday, February 10, 2004 11:36 AM
| To: Marc Maiffret; BUGTRAQ@xxxxxxxxxxxxxxxxx
| Subject: RE: EEYE: Microsoft ASN.1 Library Length Overflow
| Heap Corruption
|
| In the security bulletin published by MS it states, "In the
| most likely exploitable scenario, an attacker would have to
| have direct access to the user's network."
|
| The bulletin published by eEye states "...applications that
| make use of certificates (SSL, digitally-signed e-mail,
| signed ActiveX controls, etc.) [are affected]".
|
| I see a big disconnect there. Can you address this?
| Also, how would this potentially affect sites that are using
| an MS VPN solution?
|
|
| > -----Original Message-----
| > From: Marc Maiffret [mailto:mmaiffret@xxxxxxxx]
| > Sent: Tuesday, February 10, 2004 10:20 AM
| > To: BUGTRAQ@xxxxxxxxxxxxxxxxx
| > Subject: EEYE: Microsoft ASN.1 Library Length Overflow Heap
| Corruption
| >
| > Microsoft ASN.1 Library Length Overflow Heap Corruption
| >
| > Release Date:
| > February 10, 2004
| >
| > Date Reported:
| > July 25, 2003
| >
| > Severity:
| > High (Remote Code Execution)
| >
| > Systems Affected:
| > Microsoft Windows NT 4.0 (all versions) Microsoft Windows 2000 (SP3
| > and earlier) Microsoft Windows XP (all versions)
| >
| > Software Affected:
| > Microsoft Internet Explorer
| > Microsoft Outlook
| > Microsoft Outlook Express
| > Third-party applications that use certificates
| >
| > Services Affected:
| > Kerberos (UDP/88)
| > Microsoft IIS using SSL
| > NTLMv2 authentication (TCP/135, 139, 445)
|
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