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CVE-2014-2667

Publication date 16 November 2014

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
python2.7 18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful
Not affected
17.04 zesty
Not affected
16.10 yakkety
Not affected
16.04 LTS xenial
Not affected
15.10 wily
Not affected
15.04 vivid
Not affected
14.10 utopic
Not affected
14.04 LTS trusty
Not affected
13.10 saucy
Not affected
12.10 quantal
Not affected
12.04 LTS precise
Not affected
10.04 LTS lucid Not in release
python3.2 18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
15.10 wily Not in release
15.04 vivid Not in release
14.10 utopic Not in release
14.04 LTS trusty Not in release
13.10 saucy Not in release
12.10 quantal Ignored
12.04 LTS precise Ignored
10.04 LTS lucid Not in release
python3.4 18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
15.10 wily
Not affected
15.04 vivid
Not affected
14.10 utopic
Not affected
14.04 LTS trusty
Fixed 3.4.3-1ubuntu1~14.04
13.10 saucy Not in release
12.10 quantal Not in release
12.04 LTS precise Not in release
10.04 LTS lucid Not in release

Notes

seth-arnold

The upstream patch uses umask(0022) instead of umask(0) -- which seems as bad as the original behaviour. We should see if there is an updated patch when we prepare our packages that replaces the bad code.

mdeslaur

introduced by the fix for http://bugs.python.org/issue9299 upstream commited a better fix than the proposed one in the bug but it now changes behavour

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
python3.2
python3.4