Bug 1277348 - (CVE-2015-7195) CVE-2015-7195 Mozilla: Certain escaped characters in host of Location-header are being treated as non-escaped (MFSA 2015-129)
CVE-2015-7195 Mozilla: Certain escaped characters in host of Location-header ...
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On:
Blocks: 1275590
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Reported: 2015-11-03 01:01 EST by Huzaifa S. Sidhpurwala
Modified: 2015-11-03 23:58 EST (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2015-11-03 23:58:07 EST
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Description Huzaifa S. Sidhpurwala 2015-11-03 01:01:37 EST
Security researcher Frans Rosén reported that URLs with certain escaped characters in hostnames are parsed incorrectly. This leads to parsing being abandoned when an effected escaped character is encountered followed by a navigation to the previously parsed version of the URL. When combined with a site allowing for navigation redirection that allows for escaped characters, this could lead to potential extraction of site specific tokens. 

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Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Frans Rosén as the original reporter.


This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.

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