8.1
CWE
281
Advisory Published
CVE Published
Updated

CVE-2018-5163

First published: Wed May 09 2018(Updated: )

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.

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Mozilla Firefox<60
60
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=17.10
Canonical Ubuntu Linux=18.04
Mozilla Firefox<60.0
debian/firefox
131.0.3-1

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2018-5163?

    CVE-2018-5163 is a vulnerability that allows a malicious attacker to replace JavaScript code in the JavaScript Start-up Bytecode Cache (JSBC) in Mozilla Firefox.

  • How does CVE-2018-5163 impact users?

    CVE-2018-5163 allows attackers to execute arbitrary JavaScript code if the parent process runs the replaced code.

  • What is the severity of CVE-2018-5163?

    CVE-2018-5163 has a severity rating of 8.1 (High).

  • Which software versions are affected by CVE-2018-5163?

    Mozilla Firefox versions up to and excluding 60.0 are affected by CVE-2018-5163.

  • How can I fix CVE-2018-5163?

    Update to Mozilla Firefox version 60.0 or higher to fix CVE-2018-5163.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203