Bug 741905 (CVE-2011-3000) - CVE-2011-3000 Mozilla: Defense against multiple Location headers due to CRLF Injection (MFSA 2011-39)
Summary: CVE-2011-3000 Mozilla: Defense against multiple Location headers due to CRLF ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-3000
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-09-28 12:47 UTC by Huzaifa S. Sidhpurwala
Modified: 2019-09-29 12:47 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-09-29 00:26:00 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:1341 0 normal SHIPPED_LIVE Critical: firefox security update 2011-09-28 23:43:58 UTC
Red Hat Product Errata RHSA-2011:1342 0 normal SHIPPED_LIVE Critical: thunderbird security update 2011-09-28 23:12:13 UTC

Description Huzaifa S. Sidhpurwala 2011-09-28 12:47:55 UTC
Ian Graham of Citrix Online reported that when multiple Location headers were present in a redirect response Mozilla behavior differed from other browsers: Mozilla would use the second Location header while Chrome and Internet Explorer would use the first. Two copies of this header with different values could be a symptom of a CRLF injection attack against a vulnerable server. Most commonly it is the Location header itself that is vulnerable to the response splitting and therefore the copy preferred by Mozilla is more likely to be the malicious one. It is possible, however, that the first copy was the injected one depending on the nature of the server vulnerability.

The Mozilla browser engine has been changed to treat two copies of this header with different values as an error condition. The same has been done with the headers Content-Length and Content-Disposition 

References:
http://www.mozilla.org/security/announce/2011/mfsa2011-39.html
https://bugzilla.mozilla.org/show_bug.cgi?id=655389

Comment 1 errata-xmlrpc 2011-09-28 23:12:33 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:1342 https://rhn.redhat.com/errata/RHSA-2011-1342.html

Comment 2 errata-xmlrpc 2011-09-28 23:44:17 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 6

Via RHSA-2011:1341 https://rhn.redhat.com/errata/RHSA-2011-1341.html


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