Bug 1277488 - python-pycurl: use-after-free vulnerability in HTTPPOST when using FORM_BUFFERPTR with Unicode string
Summary: python-pycurl: use-after-free vulnerability in HTTPPOST when using FORM_BUFFE...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1277489 1277490
Blocks: 1277491
TreeView+ depends on / blocked
 
Reported: 2015-11-03 13:10 UTC by Adam Mariš
Modified: 2019-09-29 13:39 UTC (History)
2 users (show)

Fixed In Version: python-pycurl 7.19.5.2
Clone Of:
Environment:
Last Closed: 2015-12-01 13:52:29 UTC
Embargoed:

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Description Adam Mariš 2015-11-03 13:10:22 UTC 
A use-after-free vulnerability was found in Curl object's HTTPPOST setopt when a Unicode value is passed as a value with a FORM_BUFFERPTR. The str object created from the passed in unicode object would have its buffer used but the unicode object would be stored instead of the str object.

Upstream patch:

https://github.com/clintclayton/pycurl/commit/2a743674dcf152beaaf6adaddb1ef51b18d1fffe
Comment 1 Adam Mariš 2015-11-03 13:10:50 UTC 
Created python-pycurl tracking bugs for this issue:

Affects: fedora-all [bug 1277489]
Affects: epel-5 [bug 1277490]
Comment 2 Kamil Dudka 2015-11-03 18:22:31 UTC 
(In reply to Adam Mariš from comment #1)
> Affects: epel-5 [bug 1277490]

How are you confirming that epel-5 is affected?

I see no CURLFORM_BUFFERPTR handling in python-pycurl-7.15.5.1-4.el5.
Comment 4 Tomas Hoger 2015-12-01 13:52:29 UTC 
CURLFORM_BUFFERPTR support was only introduced in pycurl version 7.19.3.  The versions used in Red Hat Enterprise Linux 7 and earlier are 7.19.0 or earlier.  Therefore, no version currently in Red Hat Enterprise Linux is affected by this issue.  Problem was fixed upstream 7.19.5.2.
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