High severity · published Feb 9, 2017
CVE-2017-5940
Firejail before 0.9.44.6 and 0.9.38.x LTS before 0.9.38.10 LTS does not comprehensively address dotfile cases during its attempt to prevent accessing user files with an euid of…
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
Firejail before 0.9.44.6 and 0.9.38.x LTS before 0.9.38.10 LTS does not comprehensively address dotfile cases during its attempt to prevent accessing user files with an euid of zero, which allows local users to conduct sandbox-escape attacks via vectors involving a symlink and the --private option. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-5180.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firejail · Firejail Project
0.9.38 through 0.9.38.10; 0.9.40 through 0.9.44.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-5940
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-5940
Mailing List
http://www.openwall.com/lists/oss-security/2017/01/31/16
Third Party Advisory
http://www.securityfocus.com/bid/96221
Release Notes
https://firejail.wordpress.com/download-2/release-notes/
Issue Tracking
https://github.com/netblue30/firejail/commit/38d418505e9ee2d326557e5639e8da49c298858f
Issue Tracking
https://github.com/netblue30/firejail/commit/903fd8a0789ca3cc3c21d84cd0282481515592ef
Issue Tracking
https://github.com/netblue30/firejail/commit/b8a4ff9775318ca5e679183884a6a63f3da8f863
More from Firejail
9.8
CVE-2020-17368
Firejail through 0.9.62 mishandles shell metacharacters during use of the --output or --output-stderr option, which may lead to command injection
9.0
CVE-2017-5206
Firejail before 0.9.44.4, when running on a Linux kernel before 4.8, allows context-dependent attackers to bypass a seccomp-based sandbox protection mechanism via the…
8.8
CVE-2019-12589
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…
8.8
CVE-2017-5180
Firejail before 0.9.44.4 and 0.9.38.x LTS before 0.9.38.8 LTS does not consider the .Xauthority case during its attempt to prevent accessing user files with an euid of zero, which…
8.8
CVE-2016-9016
Firejail 0.9.38.4 allows local users to execute arbitrary commands outside of the sandbox via a crafted TIOCSTI ioctl call