CVE-2017-5454

Description

A mechanism to bypass file system access protections in the sandbox to use the file picker to access different files than those selected in the file picker through the use of relative paths. This allows for read only access to the local file system. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.64%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
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 third party advisory vdb entry
https://www.mozilla.org/security/advisories/mfsa2017-13/ vendor advisory
http://www.securitytracker.com/id/1038320 third party advisory vdb entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1349276 patch vendor advisory issue tracking
https://access.redhat.com/errata/RHSA-2017:1201 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-5454?
CVE-2017-5454 has been scored as a high severity vulnerability.
How to fix CVE-2017-5454?
To fix CVE-2017-5454, 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-2017-5454 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-5454 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-2017-5454?
CVE-2017-5454 affects Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox.
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