Matthias Gerstner discovered that the --join option of Firejail, a sandbox to restrict an application environment, was susceptible to local privilege escalation to root. For the oldstable distribution (buster), this problem has been fixed in version 0.9.58.2-2+deb10u3. For the stable distribution (bullseye), this problem has been fixed in version 0.9.64.4-2+deb11u1. We recommend that you upgrade your firejail packages. For the detailed security status of firejail please refer to its security tracker page at: https://security-tracker.debian.org/tracker/firejail
Matthias Gerstner discovered that the --join option of Firejail, a sandbox to restrict an application environment, was susceptible to local privilege escalation to root.
For the oldstable distribution (buster), this problem has been fixed in version 0.9.58.2-2+deb10u3.
For the stable distribution (bullseye), this problem has been fixed in version 0.9.64.4-2+deb11u1.
We recommend that you upgrade your firejail packages.
For the detailed security status of firejail please refer to its security tracker page at: https://security-tracker.debian.org/tracker/firejail
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