CVE-2017-5455

Public Exploit

Description

The internal feed reader APIs that crossed the sandbox barrier allowed for a sandbox escape and escalation of privilege if combined with another vulnerability that resulted in remote code execution inside the sandboxed process. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53.

7.5

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 2.35% Top 20%

Vendor Advisory redhat.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox ESR

Affected: Mozilla Firefox

References

Link	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1341191	issue tracking patch vendor advisory exploit
https://access.redhat.com/errata/RHSA-2017:1106	third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/	vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/	vendor advisory
http://www.securityfocus.com/bid/97940	vdb entry third party advisory
http://www.securitytracker.com/id/1038320	vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-5455?: CVE-2017-5455 has been scored as a high severity vulnerability.
How to fix CVE-2017-5455?: To fix CVE-2017-5455, 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-2017-5455 being actively exploited in the wild?: It is possible that CVE-2017-5455 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-5455?: CVE-2017-5455 affects Mozilla Firefox ESR, Mozilla Firefox.

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