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CVE-2014-2667

Date: November 15, 2014

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.

Language: Python

Severity Score

Related Resources (12)

https://bugs.python.org/issue21082
http://www.openwall.com/lists/oss-security/2014/03/29/5
http://lists.opensuse.org/opensuse-updates/2014-05/msg00007.html
https://nvd.nist.gov/vuln/detail/CVE-2014-2667
http://bugs.python.org/issue21082
http://www.openwall.com/lists/oss-security/2014/03/28/15
http://lists.opensuse.org/opensuse-updates/2014-05/msg00008.html
https://security.gentoo.org/glsa/201503-10
https://people.canonical.com/~ubuntu-security/cve/CVE-2014-2667
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
http://www.openwall.com/lists/oss-security/2014/03/30/4
https://www.mend.io/vulnerability-database/CVE-2014-2667

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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