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Ubuntu: (CVE-2017-7572): backintime vulnerability

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Ubuntu: (CVE-2017-7572): backintime vulnerability

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
04/06/2017
Created
11/21/2024
Added
11/19/2024
Modified
11/19/2024

Description

The _checkPolkitPrivilege function in serviceHelper.py in Back In Time (aka backintime) 1.1.18 and earlier uses a deprecated polkit authorization method (unix-process) that is subject to a race condition (time of check, time of use). With this authorization method, the owner of a process requesting a polkit operation is checked by polkitd via /proc/<pid>/status, by which time the requesting process may have been replaced by a different process with the same PID that has different privileges then the original requester.

Solution(s)

  • ubuntu-upgrade-backintime

References

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