Advisory Published
CVE Published
Updated

CVE-2017-5391

First published: Tue Jan 24 2017(Updated: )

Special "about:" pages used by web content, such as RSS feeds, can load privileged "about:" pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation. This vulnerability affects Firefox < 51.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Firefox<51
51
Firefox<51.0

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2017-5391?

    CVE-2017-5391 has a medium severity rating due to its potential for privilege escalation in Firefox versions prior to 51.

  • How do I fix CVE-2017-5391?

    To fix CVE-2017-5391, upgrade Firefox to version 51 or later.

  • Which versions of Firefox are affected by CVE-2017-5391?

    Firefox versions prior to 51 are affected by CVE-2017-5391.

  • What type of exploitation is possible with CVE-2017-5391?

    CVE-2017-5391 can potentially be exploited to allow content injection leading to privilege escalation.

  • Is there a workaround for CVE-2017-5391?

    There are no known workarounds for CVE-2017-5391 other than updating Firefox to a secure version.

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