CVE-2018-5129

high-risk
Published 2018-06-11

A lack of parameter validation on IPC messages results in a potential out-of-bounds write through malformed IPC messages. This can potentially allow for sandbox escape through memory corruption in the parent process. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.

Do I need to act?

~
2.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10 High
NETWORK / LOW complexity

Affected Products (17)

Affected Vendors

Debian Redhat Mozilla Canonical

References (36)

Third Party Advisory http://www.securityfocus.com/bid/103388
Third Party Advisory http://www.securitytracker.com/id/1040514
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0526
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0527
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0647
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0648
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1428947
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/03/msg00010.html
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/03/msg00029.html
Third Party Advisory https://security.gentoo.org/glsa/201810-01
Third Party Advisory https://security.gentoo.org/glsa/201811-13
Third Party Advisory https://usn.ubuntu.com/3545-1/
Third Party Advisory https://usn.ubuntu.com/3596-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4139
Third Party Advisory https://www.debian.org/security/2018/dsa-4155
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-06/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-07/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-09/
Third Party Advisory http://www.securityfocus.com/bid/103388
Third Party Advisory http://www.securitytracker.com/id/1040514
and 16 more references
53
/ 100
high-risk
Severity 29/34 · Critical
Exploitability 5/34 · Minimal
Exposure 19/34 · Moderate