CVE-2018-5187

CRITICAL 9.8CVE-2018-5187 · Published 18/10/2018 · updated 17/06/2026

In short

CVE-2018-5187 is a CRITICAL (CVSS 9.8) vulnerability affecting firefox (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 3.0%, higher than 87.3% of all vulnerabilities.
Fix: update to 60.1.0, 61.0, 60.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 60.1.0< 61.0`	`60.1.061.0`
thunderbird mozilla	`< 60.0`	`60.0`

Description

Memory safety bugs present in Firefox 60 and Firefox ESR 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.

References

securityfocus.com/bid/104556 · Third Party Advisory
bugzilla.mozilla.org/buglist.cgi · Issue Tracking
lists.debian.org/debian-lts-announce/2018/11/msg00011.html · Mailing List
security.gentoo.org/glsa/201810-01 · Third Party Advisory
security.gentoo.org/glsa/201811-13 · Third Party Advisory
usn.ubuntu.com/3705-1 · Third Party Advisory
debian.org/security/2018/dsa-4295 · Third Party Advisory
mozilla.org/security/advisories/mfsa2018-15 · Vendor Advisory
mozilla.org/security/advisories/mfsa2018-16 · Vendor Advisory
mozilla.org/security/advisories/mfsa2018-19 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 60.1.0< 61.0

60.1.061.0

thunderbird

mozilla

< 60.0

60.0

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