CVE-2018-5095

CRITICAL 9.8CVE-2018-5095 · Published 11/06/2018 · updated 17/06/2026

In short

CVE-2018-5095 is a CRITICAL (CVSS 9.8) vulnerability affecting firefox (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 4.1%, higher than 90.9% of all vulnerabilities.
Fix: update to 52.6.0, 58.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 52.6.0< 58.0`	`52.6.058.0`
thunderbird mozilla	`< 52.6.0`	`52.6.0`

Description

An integer overflow vulnerability in the Skia library when allocating memory for edge builders on some systems with at least 8 GB of RAM. This results in the use of uninitialized memory, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

References

securityfocus.com/bid/102783 · Third Party Advisory
securitytracker.com/id/1040270 · Third Party Advisory
access.redhat.com/errata/RHSA-2018:0122 · Third Party Advisory
access.redhat.com/errata/RHSA-2018:0262 · Third Party Advisory
bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
lists.debian.org/debian-lts-announce/2018/01/msg00030.html · Third Party Advisory
lists.debian.org/debian-lts-announce/2018/01/msg00036.html · Third Party Advisory
usn.ubuntu.com/3544-1 · Third Party Advisory
debian.org/security/2018/dsa-4096 · Third Party Advisory
debian.org/security/2018/dsa-4102 · Third Party Advisory
mozilla.org/security/advisories/mfsa2018-02 · Vendor Advisory
mozilla.org/security/advisories/mfsa2018-03 · Vendor Advisory
mozilla.org/security/advisories/mfsa2018-04 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 52.6.0< 58.0

52.6.058.0

thunderbird

mozilla

< 52.6.0

52.6.0

Description

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