CVE-2017-5426

Name: CVE-2017-5426
Creator: NVD / NIST
Published: 2018-06-11T21:29:05.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.44%

Last modified Jun 17, 2026

CVE-2017-5426 is a vulnerability of currently unknown severity. On Linux, if the secure computing mode BPF (seccomp-bpf) filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note: this issue only affects Linux. EPSS estimates a 1.44% chance of exploitation in the next 30 days.

Description

On Linux, if the secure computing mode BPF (seccomp-bpf) filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note: this issue only affects Linux. Other operating systems are not affected. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Metrics

EPSS Probability

1.44%

69.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 52.0
Mozilla	Thunderbird	< 52.0

References

http://www.securityfocus.com/bid/96694Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1257361Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory
http://www.securityfocus.com/bid/96694Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1257361Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-5426?

How severe is CVE-2017-5426?

Severity scoring for CVE-2017-5426 is pending analysis. The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5426?

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-2017-5426?

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

Scan your code now

Source: NVD / NIST