medium
6.1
CWE
79
Advisory Published
Updated

CVE-2019-17001: XSS

First published: Tue Oct 22 2019(Updated: )

A Content-Security-Policy that blocks in-line scripts could be bypassed using an object tag to execute JavaScript in the protected document (cross-site scripting). This is a separate bypass from CVE-2019-17000.*Note: This flaw only affected Firefox 69 and was not present in earlier versions.*. This vulnerability affects Firefox < 70.

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

Affected SoftwareAffected VersionHow to fix
Mozilla Firefox<70
70
Mozilla Firefox=69.0
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0+
70.0+
ubuntu/firefox<70.0
70.0
ubuntu/firefox<70.0+
70.0+
debian/firefox
125.0.3-1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2019-17001?

    CVE-2019-17001 is a vulnerability that allows bypassing a Content-Security-Policy in Firefox 69 and executing JavaScript in a protected document.

  • How does CVE-2019-17001 work?

    CVE-2019-17001 works by using an object tag to bypass a Content-Security-Policy that blocks in-line scripts and execute JavaScript in a protected document.

  • Which versions of Firefox are affected by CVE-2019-17001?

    CVE-2019-17001 only affects Firefox 69 and is not present in earlier versions.

  • What is the severity of CVE-2019-17001?

    CVE-2019-17001 has a severity value of 4 which is classified as medium.

  • How can CVE-2019-17001 be fixed?

    To fix CVE-2019-17001, it is recommended to update Firefox to version 70 or later, as this vulnerability was remedied in Firefox 70.

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