CVE-2017-7836
First published: Tue 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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox | <57 | 57 |
| Mozilla Firefox | <=56.0.2 | |
| Apple Mac OS X | ||
| Linux Linux kernel | ||
| <57 | 57 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1401339
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7840
- http://www.securityfocus.com/bid/101832
- http://www.securitytracker.com/id/1039803
- https://www.mozilla.org/security/advisories/mfsa2017-24/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
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.
What software is affected by CVE-2017-7836?
Mozilla Firefox versions up to and including 57.0.2 are affected by CVE-2017-7836.
What is the severity of CVE-2017-7836?
CVE-2017-7836 has a severity score of 7.8 (high).
How can I fix CVE-2017-7836?
To fix CVE-2017-7836, upgrade to Mozilla Firefox version 58 or later.
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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