17342 : Microsoft ISA Server Basic Credentials Exposure
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Views This Week Views All Time Added to OSVDB Last Modified Modified (since 2008) Percent Complete
5 819 almost 8 years ago about 5 years ago 0 times 90%

Timeline

Disclosure Date
2005-06-14

Description

Microsoft ISA Server contains a flaw that may lead to an unauthorized password exposure. It is possible to gain unauthorized access to Base64-encoded passwords when Basic authentication is configured on the "Incoming Web Requests" listener. If a Web publishing rule is configured for both "SSL required" and "User authentication" the ISA server will forward Basic authentication credentials of users to published web sites with HTTP instead of HTTPS. This may allow an attacker to monitor the communication and gain access to the unencrypted password.

Classification

Location: Local Access Required, Remote / Network Access
Attack Type: Cryptographic, Information Disclosure
Impact: Loss of Confidentiality
Exploit: Exploit Public

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch to address this vulnerability.

Products

Microsoft Corporation
ISA Server
2000 SP2
Small Business Server
2003 Premium Edition
2000

References

Tools & Filters

18487 18491

Credit

  • Han Valk -

CVSSv2 Score

NVD does not currently have a CVSSv2 score assigned.

Comments

No Comments.

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