CVE-2017-5426

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.79% Top 30%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/96694 vdb entry third party advisory
https://www.mozilla.org/security/advisories/mfsa2017-09/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1257361 issue tracking patch vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-05/ vendor advisory
http://www.securitytracker.com/id/1037966 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-5426?
CVE-2017-5426 has been scored as a medium severity vulnerability.
How to fix CVE-2017-5426?
To fix CVE-2017-5426, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-5426 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-5426 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-5426?
CVE-2017-5426 affects Mozilla Firefox, Mozilla Thunderbird.
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