Permissions, Privileges, and Access Controls in Python - CVE-2011-4944
Published: August 28, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43656
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-4944
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Python.org
Affected software:
Python
Python
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Python 2.6 through 3.2 creates ~/.pypirc with world-readable permissions before changing them after data has been written, which introduces a race condition that allows local users to obtain a username and password by reading this file.
How to mitigate CVE-2011-4944
Install update from vendor's website.
Sources
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=650555
- http://bugs.python.org/file23824/pypirc-secure.diff
- http://bugs.python.org/issue13512
- http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://secunia.com/advisories/50858
- http://secunia.com/advisories/51024
- http://secunia.com/advisories/51040
- http://secunia.com/advisories/51087
- http://secunia.com/advisories/51089
- http://www.openwall.com/lists/oss-security/2012/03/27/10
- http://www.openwall.com/lists/oss-security/2012/03/27/2
- http://www.openwall.com/lists/oss-security/2012/03/27/5
- http://www.ubuntu.com/usn/USN-1592-1
- http://www.ubuntu.com/usn/USN-1596-1
- http://www.ubuntu.com/usn/USN-1613-1
- http://www.ubuntu.com/usn/USN-1613-2
- http://www.ubuntu.com/usn/USN-1615-1
- http://www.ubuntu.com/usn/USN-1616-1
- https://bugzilla.redhat.com/show_bug.cgi?id=758905