ALT-PU-2021-2854-1
Closed vulnerabilities
Published: 2021-06-03
BDU:2021-03207
Уязвимость функции polkit_system_bus_name_get_creds_sync() демона dbus-daemon библиотеки Polkit, позволяющая нарушителю повысить свои привилегии
Severity: HIGH (7.8)
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References:
Published: 2022-02-16
Modified: 2025-04-03
Modified: 2025-04-03
CVE-2021-3560
It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity: HIGH (7.8)
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References:
- http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
- http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
- http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
- http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
Closed bugs
Polkit не проверяет список групп пользователя, назначенныx через NSS.