Firejail Project: >> Firejail Security Vulnerabilities
A Privilege Context Switching issue was discovered in join.c in Firejail 0.9.68. By crafting a bogus Firejail container that is accepted by the Firejail setuid-root program as a join target, a local attacker can enter an environment in which the Linux user namespace is still the initial user namespace, the NO_NEW_PRIVS prctl is not activated, and the entered mount namespace is under the attacker's control. In this way, the filesystem layout can be adjusted to gain root privileges through execution of available setuid-root binaries such as su or sudo.
CVSS Score
7.8
EPSS Score
0.001
Published
2022-06-09
Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation.
CVSS Score
7.8
EPSS Score
0.001
Published
2021-02-08
Firejail through 0.9.62 does not honor the -- end-of-options indicator after the --output option, which may lead to command injection.
CVSS Score
7.8
EPSS Score
0.001
Published
2020-08-11
Firejail through 0.9.62 mishandles shell metacharacters during use of the --output or --output-stderr option, which may lead to command injection.
CVSS Score
9.8
EPSS Score
0.045
Published
2020-08-11
In Firejail before 0.9.60, seccomp filters are writable inside the jail, leading to a lack of intended seccomp restrictions for a process that is joined to the jail after a filter has been modified by an attacker.
CVSS Score
8.8
EPSS Score
0.001
Published
2019-06-03
Firejail before 0.9.60 allows truncation (resizing to length 0) of the firejail binary on the host by running exploit code inside a firejail sandbox and having the sandbox terminated. To succeed, certain conditions need to be fulfilled: The jail (with the exploit code inside) needs to be started as root, and it also needs to be terminated as root from the host (either by stopping it ungracefully (e.g., SIGKILL), or by using the --shutdown control command). This is similar to CVE-2019-5736.
CVSS Score
8.1
EPSS Score
0.014
Published
2019-05-31
Firejail does not restrict access to --tmpfs, which allows local users to gain privileges, as demonstrated by mounting over /etc.
CVSS Score
7.8
EPSS Score
0.0
Published
2017-04-13
Firejail allows local users to truncate /etc/resolv.conf via a chroot command to /.
CVSS Score
3.3
EPSS Score
0.0
Published
2017-04-13
Firejail uses 0777 permissions when mounting /tmp, which allows local users to gain privileges.
CVSS Score
7.8
EPSS Score
0.0
Published
2017-04-13
Firejail uses 0777 permissions when mounting (1) /dev, (2) /dev/shm, (3) /var/tmp, or (4) /var/lock, which allows local users to gain privileges.
CVSS Score
7.8
EPSS Score
0.0
Published
2017-04-13
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