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cURL GnuTLS Certificate Verification Methods Security Bypass Weakness


Title : cURL GnuTLS Certificate Verification Methods Security Bypass Weakness
Advisory ID : FrSIRT/ADV-2007-2551
CVE ID : CVE-2007-3564
Rated as : Low Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-07-18

Advisory Details

 
  Description
  Affected Products
  Solution
  References
Technical Description    Receive FrSIRT alerts in a Text format  Receive FrSIRT alerts in a PDF format  Receive FrSIRT alerts in an XML format  Receive FrSIRT notifications by SMS 

A weakness has been identified in cURL, which could be exploited by attackers to bypass security restrictions. This issue is caused by errors within the GnuTLS certificate verification methods that do not properly check for expiration and activation dates, which could cause a vulnerable application to allow connections to sites using expired certificates.

Credits

Vulnerability reported by Kees Cook.

ChangeLog

2007-07-18 : Initial release

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