8.1
CWE
20
Advisory Published
CVE Published
Updated

CVE-2017-7807: Input Validation

First published: Tue Aug 08 2017(Updated: )

A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has been addressed by requiring fallback files be inside the manifest directory.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
debian/firefox
118.0.2-1
debian/firefox-esr
91.12.0esr-1~deb10u1
115.3.1esr-1~deb10u1
102.15.0esr-1~deb11u1
115.3.1esr-1~deb11u1
102.15.1esr-1~deb12u1
115.3.0esr-1~deb12u1
115.3.0esr-1
Thunderbird<52.3
52.3
Debian=8.0
Debian=9.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.5
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0
Firefox<55.0
Firefox ESR<52.3.0
Thunderbird<52.3.0
Firefox<55
55
Firefox ESR<52.3
52.3

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 the severity of CVE-2017-7807?

    CVE-2017-7807 has a moderate severity level due to its ability to hijack URLs using AppCache.

  • Which products are affected by CVE-2017-7807?

    CVE-2017-7807 affects multiple products including Mozilla Firefox, Firefox ESR, and Thunderbird.

  • How do I fix CVE-2017-7807?

    To fix CVE-2017-7807, update to the latest version of Firefox, Firefox ESR, or Thunderbird as specified in the security advisories.

  • What is the exploit mechanism for CVE-2017-7807?

    The exploit mechanism for CVE-2017-7807 relies on AppCache to hijack a URL by serving fallback files from an unauthorized sub-path.

  • What versions of Firefox are vulnerable to CVE-2017-7807?

    Versions of Firefox up to 55.0 are vulnerable to CVE-2017-7807.

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.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203