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CVE-2017-5402
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. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
Published: Jun 11, 2018
Modified: Jun 17, 2026
CWE-416
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (21)
| Vendor | Product | Version |
|---|---|---|
| debian | debian_linux | 9.0 |
| redhat | enterprise_linux | 5.0 |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux_desktop | 5.0 |
| redhat | enterprise_linux_desktop | 6.0 |
| redhat | enterprise_linux_desktop | 7.0 |
| redhat | enterprise_linux_server | 5.0 |
| redhat | enterprise_linux_server | 6.0 |
| redhat | enterprise_linux_server | 7.0 |
| redhat | enterprise_linux_server_aus | 7.3 |
| redhat | enterprise_linux_server_aus | 7.4 |
| redhat | enterprise_linux_server_eus | 7.3 |
| redhat | enterprise_linux_server_eus | 7.4 |
| redhat | enterprise_linux_server_eus | 7.5 |
| redhat | enterprise_linux_workstation | 5.0 |
| redhat | enterprise_linux_workstation | 6.0 |
| redhat | enterprise_linux_workstation | 7.0 |
| mozilla | thunderbird | * < 45.8.0 |
| mozilla | firefox | * < 52.0 |
…and 1 more
GitHub Security Advisory GHSA-9m53-4c27-h8f5
A use-after-free can occur when events are fired for a "FontFace" object after the object has...
References (28)
- http://rhn.redhat.com/errata/RHSA-2017-0459.html Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0461.html Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0498.html Third Party Advisory
- http://www.securityfocus.com/bid/96664 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037966 Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1334876 Issue Tracking, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201705-06 Third Party Advisory
- https://security.gentoo.org/glsa/201705-07 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3805 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3832 Third 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.html Third Party Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
2.90%
Top 14% most likely to be exploited
Threat Score
40.1 / 100
Data Sources
NVD
EPSS
GitHub