Bug 1062370 (CVE-2014-1912)

Summary:	CVE-2014-1912 python: buffer overflow in socket.recvfrom_into()
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	adev88, amcnabb, bkabrda, contribs, derks, dmalcolm, drieden, extras-orphan, hhorak, ivazqueznet, jberan, jeffrey.ness, jkurik, jonathansteffan, jorton, katzj, mdshaikh, mharris, mmaslano, mmcgrath, ncoghlan, nobody+bgollahe, python-maint, tdawson, tomspur, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	python 2.7.7, python 3.3.4, python 3.4.0	Doc Type:	Bug Fix
Doc Text:	It was discovered that the socket.recvfrom_into() function failed to check the size of the supplied buffer. This could lead to a buffer overflow when the function was called with an insufficiently sized buffer.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-03 21:05:05 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1062374, 1062375, 1062376, 1157721, 1187779, 1206572
Bug Blocks:	1062373

Description Vincent Danen 2014-02-06 18:16:46 UTC

A vulnerability was reported [1] in Python's socket module, due to a boundary error within the sock_recvfrom_into() function, which could be exploited to cause a buffer overflow.  This could be used to crash a Python application that uses the socket.recvfrom_info() function or, possibly, execute arbitrary code with the permissions of the user running vulnerable Python code.

This vulnerable function, socket.recvfrom_into(), was introduced in Python 2.5.  Earlier versions are not affected by this flaw.  This is fixed in upstream branches for version 2.7 [2] and version 3.3 [3].


[1] http://bugs.python.org/issue20246
[2] http://hg.python.org/cpython/rev/87673659d8f7
[3] http://hg.python.org/cpython/rev/7f176a45211f/

Comment 2 Vincent Danen 2014-02-06 18:21:17 UTC

Created python tracking bugs for this issue:

Affects: fedora-all [bug 1062375]

Comment 3 Vincent Danen 2014-02-06 18:21:20 UTC

Created python3 tracking bugs for this issue:

Affects: fedora-all [bug 1062374]

Comment 5 Murray McAllister 2014-02-13 07:27:39 UTC

MITRE assigned CVE-2014-1912 to this issue:

http://seclists.org/oss-sec/2014/q1/336

Comment 6 Fedora Update System 2014-02-14 07:51:25 UTC

python-2.7.5-10.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2014-02-15 07:05:13 UTC

python3-3.3.2-9.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 12 Vincent Danen 2014-10-02 13:46:00 UTC

Statement:

This issue did not affect the versions of python as shipped with Red Hat Enterprise Linux 5 as they did not include the vulnerable socket.recvfrom_into() function.  This issue was also corrected in the version of python shipped with Red Hat Enterprise Linux 7.0 prior to release.

The Red Hat Security Response Team has rated this issue as having Moderate security impact. A future update may address this issue in Red Hat Software Collections. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 14 Tomas Hoger 2014-10-27 13:41:25 UTC

This was fixed upstream in Python 3.3.4 and 2.7.7:

https://docs.python.org/3.3/whatsnew/changelog.html#python-3-3-4
https://hg.python.org/cpython/raw-file/f89216059edf/Misc/NEWS

Comment 16 Tomas Hoger 2014-10-27 14:52:09 UTC

Created python26 tracking bugs for this issue:

Affects: epel-5 [bug 1157721]

Comment 19 errata-xmlrpc 2015-06-04 08:29:49 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS

Via RHSA-2015:1064 https://rhn.redhat.com/errata/RHSA-2015-1064.html

Comment 20 errata-xmlrpc 2015-07-22 06:39:31 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:1330 https://rhn.redhat.com/errata/RHSA-2015-1330.html