CVE-2017-7572 Race condition in n/a
A race condition in Back In Time allows local attackers to bypass polkit authorization checks and escalate privileges by exploiting process replacement timing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7572?
CVE-2017-7572 is a high-severity vulnerability in n/a, published on 6 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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/status, by which time the requesting process may have been replaced by a different process with the same PID that has different privileges then the original requester.
Weakness: CWE-362
Which versions are affected by CVE-2017-7572?
It affects 1 product.
Products include Backintime Project Backintime.
How do I fix CVE-2017-7572?
Apply the vendor's patch.
Is CVE-2017-7572 being exploited?
There is no known exploitation of CVE-2017-7572 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-7572, GHSA-gq8h-7hr7-25cg, openSUSE-SU-2024:10647-1.