Bug 1405416 (CVE-2016-9964) - CVE-2016-9964 python-bottle: redirect() doesn't filter "\r\n" which allows for CRLF attack
Summary: CVE-2016-9964 python-bottle: redirect() doesn't filter "\r\n" which allows fo...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2016-9964
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1405417 1405418
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-12-16 13:14 UTC by Andrej Nemec
Modified: 2019-09-29 14:02 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2019-06-08 03:04:36 UTC


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Description Andrej Nemec 2016-12-16 13:14:43 UTC
It was found that redirect() in bottle.py doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.

Upstream bug:

https://github.com/bottlepy/bottle/issues/913

Upstream patch:

https://github.com/bottlepy/bottle/commit/6d7e13da0f998820800ecb3fe9ccee4189aefb54

Comment 1 Andrej Nemec 2016-12-16 13:15:20 UTC
Created python-bottle tracking bugs for this issue:

Affects: fedora-all [bug 1405417]
Affects: epel-all [bug 1405418]

Comment 2 Product Security DevOps Team 2019-06-08 03:04:36 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.


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