CVE-2017-7836: High severity firefox vulnerability

Published Nov 14, 2017
·
Updated

The "pingsender" executable used by the Firefox Health Report dynamically loads a system copy of libcurl, which an attacker could replace. This allows for privilege escalation as the replaced libcurl code will run with Firefox's privileges. Note: This attack requires an attacker have local system access and only affects OS X and Linux. Windows systems are not affected.

Affected Software

4 affected componentsFixes available
Mozilla Firefox<=56.0.2
Apple iOS and macOS
Linux Linux kernel
Mozilla Firefox<57
57

Event History

Nov 14, 2017
CVE Published
12:00 AM
Jun 11, 2018
CVE Published
via MITRE·09:00 PM
Data Sourced
via MITRE·09:00 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is CVE-2017-7836?

CVE-2017-7836 is a vulnerability that allows an attacker to replace the system copy of libcurl used by the Firefox Health Report, leading to privilege escalation.

2

What software is affected by CVE-2017-7836?

Mozilla Firefox versions up to and including 57.0.2 are affected by CVE-2017-7836.

3

What is the severity of CVE-2017-7836?

CVE-2017-7836 has a severity score of 7.8 (high).

4

How can I fix CVE-2017-7836?

To fix CVE-2017-7836, upgrade to Mozilla Firefox version 58 or later.

5

Where can I find more information about CVE-2017-7836?

More information about CVE-2017-7836 can be found at the following references: [link1], [link2], [link3].

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