CVE-2014-2667

Severity: low (CVSS 3.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-11-16 · updated 2026-06-17
Weakness: CWE-362

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.

Affected products

Python: 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5 (+11)

References

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
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

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