CVE-2017-7842: Infoleak

Reference Links

• https://bugzilla.mozilla.org/show_bug.cgi?id=1397064
• https://www.mozilla.org/security/advisories/mfsa2017-24/
• http://www.securityfocus.com/bid/101832
• http://www.securitytracker.com/id/1039803
• https://launchpad.net/bugs/cve/CVE-2017-7842
• https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/
• https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7840
• https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7842
• https://security-tracker.debian.org/tracker/CVE-2017-7842
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7842
• https://nvd.nist.gov/vuln/detail/CVE-2017-7842
• https://ubuntu.com/security/CVE-2017-7842

Parent vulnerabilities

(Appears in the following advisories)

• MFSA2017-24

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2017-7828
• CVE-2017-7830
• CVE-2017-7831
• CVE-2017-7832
• CVE-2017-7833
• CVE-2017-7834
• CVE-2017-7835
• CVE-2017-7836
• CVE-2017-7837
• CVE-2017-7838
• CVE-2017-7839
• CVE-2017-7840
• CVE-2017-7842
• CVE-2017-7827
• CVE-2017-7826

Frequently Asked Questions

• What is CVE-2017-7842?

  CVE-2017-7842 is a vulnerability that affects Firefox versions up to 57.0.2 and allows two network requests to be made for <link> elements when the Referrer Policy attribute is set to 'no-referrer', with one of these requests including the referrer against the set policy.

• Which software is affected by CVE-2017-7842?

  Mozilla Firefox versions up to 57.0.2 are affected by CVE-2017-7842.

• What is the severity of CVE-2017-7842?

  CVE-2017-7842 has a severity rating of 5.3 (medium).

• What is the solution for CVE-2017-7842?

  To mitigate CVE-2017-7842, users should update to Firefox version 57.0.3 or later.

• Where can I find more information about CVE-2017-7842?

  You can find more information about CVE-2017-7842 on Bugzilla, Mozilla's security advisories page, and SecurityFocus.