What is CVE-2018-1084?

CVE-2018-1084 is a high-severity vulnerability in Corosync, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-04-12.

How severe is CVE-2018-1084?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Corosync

CVE-2018-1084

corosync before version 2.4.4 is vulnerable to an integer overflow in exec/totemcrypto.c.

Vulnerability class: Integer Overflow

Published 2018-04-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.031 (87.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.031 · change: -0.001

Affected products

Corosync
Unspecified Corosync — versions corosync 2.4.4
Canonical Ubuntu Linux — versions 16.04, 18.04
Debian Linux — versions 9.0
Red Hat Enterprise Linux Server — versions 7.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

www.securityfocus.com/bid/103758 (VDB Entry, Third Party Advisory, vdb-entry)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
www.debian.org/security/2018/dsa-4174 (vendor-advisory, Third Party Advisory)
access.redhat.com/errata/RHSA-2018:1169 (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/4000-1/ (vendor-advisory, Third Party Advisory)
security.gentoo.org/glsa/202107-01 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-1084?: CVE-2018-1084 is a high-severity vulnerability in Corosync, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-04-12.
How severe is CVE-2018-1084?: High severity. CVSS v3 base score is 7.5 out of 10.