| Titel | Local Privilege Escalation in polkit's pkexec |
|---|
| Beschreibung | CVE-2021-4034
Local Privilege Escalation (from any user to root) in polkit's pkexec, a SUID-root program that is installed by default on every major Linux distribution
PoC:
https://haxx.in/files/blasty-vs-pkexec.c
Countermeasure:
If no patches are available for your operating system, you can remove the SUID-bit from pkexec as a temporary mitigation; for example:
# chmod 0755 /usr/bin/pkexec
|
|---|
| Quelle | ⚠️ https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt |
|---|
| Benutzer | misc (UID 3) |
|---|
| Einreichung | 26.01.2022 07:12 (vor 5 Jahren) |
|---|
| Moderieren | 26.01.2022 07:15 (3 minutes later) |
|---|
| Status | Akzeptiert |
|---|
| VulDB Eintrag | 191603 [polkit /usr/bin/pkexec erweiterte Rechte] |
|---|
| Punkte | 19 |
|---|