Vulnerability Description
If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode Cache (JSBC) for other JavaScript code. If the parent process then runs this replaced code, the executed script would be run with the parent process' privileges, escaping the sandbox on content processes. This vulnerability affects Firefox < 60.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Ubuntu Linux | 14.04 |
| Mozilla | Firefox | < 60.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/104139Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040896Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/3645-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-11/Vendor Advisory
- http://www.securityfocus.com/bid/104139Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040896Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/3645-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-11/Vendor Advisory
FAQ
What is CVE-2018-5163?
CVE-2018-5163 is a vulnerability with a CVSS score of 8.1 (HIGH). If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode ...
How severe is CVE-2018-5163?
CVE-2018-5163 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-5163?
Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux, Mozilla Firefox.