Vulnerability Description
A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 52.2.0 |
| Mozilla | Thunderbird | < 52.2.0 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/99057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1440Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1561Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1366595Issue TrackingVendor Advisory
- https://www.debian.org/security/2017/dsa-3881Third Party Advisory
- https://www.debian.org/security/2017/dsa-3918Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
- http://www.securityfocus.com/bid/99057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1440Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1561Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1366595Issue TrackingVendor Advisory
FAQ
What is CVE-2017-7756?
CVE-2017-7756 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefo...
How severe is CVE-2017-7756?
CVE-2017-7756 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-7756?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird, Debian Debian Linux.