CVE-2014-2667: Race Condition
First published: Sun Nov 16 2014(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Python 2.7 | =3.2.0 | |
| Python 2.7 | =3.2.1 | |
| Python 2.7 | =3.2.2 | |
| Python 2.7 | =3.2.3 | |
| Python 2.7 | =3.2.4 | |
| Python 2.7 | =3.2.5 | |
| Python 2.7 | =3.2.6 | |
| Python 2.7 | =3.3.0 | |
| Python 2.7 | =3.3.1 | |
| Python 2.7 | =3.3.2 | |
| Python 2.7 | =3.3.3 | |
| Python 2.7 | =3.3.4 | |
| Python 2.7 | =3.3.5 | |
| Python 2.7 | =3.3.6 | |
| Python 2.7 | =3.4.0 | |
| Python 2.7 | =3.4.1 | |
| Python 2.7 | =3.4.2 |
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Reference Links
- http://bugs.python.org/issue21082
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- 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
Frequently Asked Questions
What is the severity of CVE-2014-2667?
CVE-2014-2667 is categorized as a medium severity vulnerability due to the potential for local users to bypass file permissions.
How do I fix CVE-2014-2667?
To fix CVE-2014-2667, you should upgrade to a patched version of Python, ideally version 3.5 or later.
Which versions of Python are affected by CVE-2014-2667?
CVE-2014-2667 affects Python versions 3.2 through 3.4, including all versions in between, such as 3.2.0 to 3.4.2.
Can CVE-2014-2667 be exploited remotely?
No, CVE-2014-2667 can only be exploited locally by users with access to the system.
What specific issue does CVE-2014-2667 address?
CVE-2014-2667 addresses a race condition in the _get_masked_mode function that can allow users to bypass intended file permissions.
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- version/python 2.7/3.2.5
- version/python 2.7/3.2.6
- version/python 2.7/3.3.0
- version/python 2.7/3.3.1
- version/python 2.7/3.3.2
- version/python 2.7/3.3.3
- version/python 2.7/3.3.4
- version/python 2.7/3.3.5
- version/python 2.7/3.3.6
- version/python 2.7/3.4.0
- version/python 2.7/3.4.1
- version/python 2.7/3.4.2