A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
CVE-2021-4034 viene sfruttato?
Inserito nel catalogo CISA KEV il 2022-06-27.
Scadenza di remediation federale: 2022-07-18.
Oltre quella data da 1489 giorni.
EPSS stima la probabilità di sfruttamento nei prossimi 30 giorni al 95%.
Codice di exploit pubblico: integrato in uno strumento pubblico.
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