Vulnerability CVE-2014-2667
Published: 2014-11-15   Modified: 2014-11-16

Description:
Race condition in the _get_masked_mode function in Lib/os.py in Python 3.2 through 3.5, when exist_ok is set to true and multiple threads are used, might allow local users to bypass intended file permissions by leveraging a separate application vulnerability before the umask has been set to the expected value.

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.3/10
4.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Python -> Python 

 References:
http://bugs.python.org/issue21082
http://lists.opensuse.org/opensuse-updates/2014-05/msg00007.html
http://lists.opensuse.org/opensuse-updates/2014-05/msg00008.html
http://www.openwall.com/lists/oss-security/2014/03/28/15
http://www.openwall.com/lists/oss-security/2014/03/29/5
http://www.openwall.com/lists/oss-security/2014/03/30/4
https://security.gentoo.org/glsa/201503-10
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