| Titre | Local Privilege Escalation in polkit's pkexec |
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| Description | 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
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| La source | ⚠️ https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt |
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| Utilisateur | misc (UID 3) |
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| Soumission | 26/01/2022 07:12 (il y a 5 ans) |
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| Modérer | 26/01/2022 07:15 (3 minutes later) |
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| Statut | Accepté |
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| Entrée VulDB | 191603 [polkit /usr/bin/pkexec élévation de privilèges] |
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| Points | 19 |
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