CVE-2018-5104

high-risk
Published 2018-06-11

A use-after-free vulnerability can occur during font face manipulation when a font face is freed while still in use, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

Do I need to act?

!
24.1% chance of exploitation in next 30 days
EPSS score — higher than 76% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (17)

Affected Vendors

Debian Redhat Mozilla Canonical

References (26)

Third Party Advisory http://www.securityfocus.com/bid/102783
Third Party Advisory http://www.securitytracker.com/id/1040270
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0122
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0262
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1425000
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/01/msg00030.html
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/01/msg00036.html
Third Party Advisory https://usn.ubuntu.com/3544-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4096
Third Party Advisory https://www.debian.org/security/2018/dsa-4102
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-02/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-03/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-04/
Third Party Advisory http://www.securityfocus.com/bid/102783
Third Party Advisory http://www.securitytracker.com/id/1040270
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0122
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0262
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1425000
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/01/msg00030.html
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/01/msg00036.html
and 6 more references
66
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 15/34 · Moderate
Exposure 19/34 · Moderate