Vulnerability Description
A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 9.0 |
| Redhat | Enterprise Linux | 5.0 |
| Redhat | Enterprise Linux Desktop | 5.0 |
| Redhat | Enterprise Linux Server | 5.0 |
| Redhat | Enterprise Linux Server Aus | 7.3 |
| Redhat | Enterprise Linux Server Eus | 7.3 |
| Redhat | Enterprise Linux Workstation | 5.0 |
| Mozilla | Thunderbird | < 45.8.0 |
| Mozilla | Firefox | < 52.0 |
Related Weaknesses (CWE)
References
- http://rhn.redhat.com/errata/RHSA-2017-0459.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0461.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0498.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96664Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037966Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1334876Issue TrackingPatchVendor Advisory
- https://security.gentoo.org/glsa/201705-06Third Party Advisory
- https://security.gentoo.org/glsa/201705-07Third Party Advisory
- https://www.debian.org/security/2017/dsa-3805Third Party Advisory
- https://www.debian.org/security/2017/dsa-3832Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-06/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-07/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0459.htmlThird Party Advisory
FAQ
What is CVE-2017-5402?
CVE-2017-5402 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. Thi...
How severe is CVE-2017-5402?
CVE-2017-5402 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-2017-5402?
Check the references section above for vendor advisories and patch information. Affected products include: Debian Debian Linux, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus.