IE 5.22 on Mac Transmitting HTTP Referer from Secure Page

2008.07.16
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-200


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

Documented instance of Internet Explorer 5.22 on a Mac transmitting an HTTP Referer header from a link on a secure page (https): http://www.gadgetopia.com/2003/12/23/OutlookWebAccessPrivacyHole.html This is clearly covered in the HTTP 1.1 spec (RFC 2616), Section 15.1.3, "Encoding Sensitive Information in URI's": "Clients SHOULD NOT include a Referer header field in a (non-secure) HTTP request if the referring page was transferred with a secure protocol."

References:

http://www.securityfocus.com/bid/9295
http://www.securityfocus.com/archive/1/348574
http://www.securityfocus.com/archive/1/348360
http://www.gadgetopia.com/2003/12/23/OutlookWebAccessPrivacyHole.html


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