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/status, by which time the requesting process may have been replaced by a different process with the same PID that has different privileges then the original requester.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

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-04-06T18:00:00Z

Updated: 2024-09-16T16:32:59.625Z

Reserved: 2017-04-06T00:00:00Z

Link: CVE-2017-7572

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2017-04-06T18:59:00.353

Modified: 2017-04-12T20:48:02.560

Link: CVE-2017-7572

cve-icon Redhat

No data.