CVE-2020-17368

Name: CVE-2020-17368
Creator: NVD / NIST
Published: 2020-08-11T16:15:12.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.10%

Last modified Jun 17, 2026

CVE-2020-17368 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Firejail through 0.9.62 mishandles shell metacharacters during use of the --output or --output-stderr option, which may lead to command injection.. EPSS estimates a 4.10% chance of exploitation in the next 30 days.

Description

Firejail through 0.9.62 mishandles shell metacharacters during use of the --output or --output-stderr option, which may lead to command injection.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

4.10%

89.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Firejail Project	Firejail	<= 0.9.62
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Opensuse	Leap	15.2

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00036.htmlMailing List, Third Party Advisory
https://github.com/netblue30/firejail/Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00033.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JFXN3JJG4DIMN4TAHOTKFMS7SGM4EOTR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W66IR5YT4KG464SKEMQN2NP2LGATGEGS/
https://security.gentoo.org/glsa/202101-02Third Party Advisory
https://www.debian.org/security/2020/dsa-4742Third Party Advisory
https://www.debian.org/security/2020/dsa-4743Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00036.htmlMailing List, Third Party Advisory
https://github.com/netblue30/firejail/Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00033.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JFXN3JJG4DIMN4TAHOTKFMS7SGM4EOTR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W66IR5YT4KG464SKEMQN2NP2LGATGEGS/
https://security.gentoo.org/glsa/202101-02Third Party Advisory
https://www.debian.org/security/2020/dsa-4742Third Party Advisory
https://www.debian.org/security/2020/dsa-4743Third Party Advisory

Timeline

Published: Aug 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is 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.

How severe is CVE-2020-17368?

CVE-2020-17368 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.10% probability of exploitation in the next 30 days.

How do I fix CVE-2020-17368?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-17368?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST