Vulnerability CVE-2008-1545
Published: 2008-03-28   Modified: 2012-02-12

Description:
The setRequestHeader method of the XMLHttpRequest object in Microsoft Internet Explorer 7 does not restrict the dangerous Transfer-Encoding HTTP request header, which allows remote attackers to conduct HTTP request splitting and HTTP request smuggling attacks via a POST containing a "Transfer-Encoding: chunked" header and a request body with an incorrect chunk size.

See advisories in our WLB2 database:
Topic
Author
Date
Low
IE7 Transfer-Encoding: chunked allows RequestSplitting/Smuggling.
Stefano Di Paola
29.03.2008

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Microsoft -> IE 

 References:
http://securityreason.com/securityalert/3786
http://www.mindedsecurity.com/MSA01240108.html
http://www.securityfocus.com/archive/1/489960/100/0/threaded
http://www.vupen.com/english/advisories/2008/0980
https://exchange.xforce.ibmcloud.com/vulnerabilities/42804
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