CVE-2014-2667

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Summary

CVECVE-2014-2667
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-11-16 01:59:01 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionRace 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.

Risk And Classification

Primary CVSS: v2.0 3.3 from [email protected]

AV:L/AC:M/Au:N/C:P/I:P/A:N

Problem Types: CWE-362 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:L/AC:M/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Python Python 3.2.0 All All All
Application Python Python 3.2.1 All All All
Application Python Python 3.2.2 All All All
Application Python Python 3.2.3 All All All
Application Python Python 3.2.4 All All All
Application Python Python 3.2.5 All All All
Application Python Python 3.2.6 All All All
Application Python Python 3.3.0 All All All
Application Python Python 3.3.1 All All All
Application Python Python 3.3.2 All All All
Application Python Python 3.3.3 All All All
Application Python Python 3.3.4 All All All
Application Python Python 3.3.5 All All All
Application Python Python 3.3.6 All All All
Application Python Python 3.4.0 All All All
Application Python Python 3.4.1 All All All
Application Python Python 3.4.2 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - Re: [PSRT] CVE request: os.makedirs(exist_ok=True) is not thread-safe in Python af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
Gentoo Security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
oss-security - Re: CVE request: os.makedirs(exist_ok=True) is not thread-safe in Python af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
[security-announce] openSUSE-SU-2020:0086-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
openSUSE-SU-2014:0597-1: moderate: update for python3 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
oss-security - CVE request: os.makedirs(exist_ok=True) is not thread-safe in Python af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
openSUSE-SU-2014:0596-1: moderate: update for python3 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Issue 21082: os.makedirs(exist_ok=True) is not thread-safe: umask is set temporary to 0, serious security problem - Python tracker af854a3a-2127-422b-91ae-364da2661108 bugs.python.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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