CVE-2017-7572

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/status, by which time the requesting process may have been replaced by a different process with the same PID that has different privileges then the original requester.

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.65%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/bit-team/backintime/commit/7f208dc547f569b689c888103e3b593a48cd1869 third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-7572?
CVE-2017-7572 has been scored as a high severity vulnerability.
How to fix CVE-2017-7572?
To fix CVE-2017-7572, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7572 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7572 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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