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Fencer Intel
high 7.5

CVE-2018-1084 json

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

published 2018-04-12 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11734

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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

Patch / fix

  • corosync corosync 2.4.4
  • corosync Debian 14, Debian 13, Debian 12 2.4.4-1

debian advisories DEBIAN-CVE-2018-1084

  • corosync Ubuntu 16.04 LTS 2.3.5-3ubuntu2.3
  • corosync Ubuntu 18.04 LTS 2.4.3-0ubuntu1.1

ubuntu advisories UBUNTU-CVE-2018-1084

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • corosync RHEL 7 2.4.3-2.el7_5.1
  • corosynclib RHEL 7 2.4.3-2.el7_5.1
  • corosync-qnetd RHEL 7 2.4.3-2.el7_5.1
  • corosync-qdevice RHEL 7 2.4.3-2.el7_5.1

red hat advisories RHSA-2018:1169

  • corosync SLE High Availability Extension 12 SP2 2.3.5-6.23.1
  • corosync SLE Software Development Kit 12 SP3, SLE High Availability Extension 12 SP3 2.3.6-9.13.1

suse advisories SUSE-SU-2018:1130-1SUSE-SU-2018:1121-1

  • corosync openSUSE Tumbleweed 2.4.5+git70.64010f57-1.2

opensuse advisories openSUSE-SU-2024:10695-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1084 updated cvss 7.5

corosync: Integer overflow in exec/totemcrypto.c:authenticate_nss_2_3() function

  • Red Hat Storage 3 corosync, corosynclib
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Server High Availability (v. 7) corosync 2.4.3-2.el7_5.1, corosynclib 2.4.3-2.el7_5.1, corosync-qnetd 2.4.3-2.el7_5.1, corosync-qdevice 2.4.3-2.el7_5.1 Red Hat Enterprise Linux Server Resilient Storage (v. 7) corosync 2.4.3-2.el7_5.1, corosynclib 2.4.3-2.el7_5.1, corosync-qnetd 2.4.3-2.el7_5.1, corosync-qdevice 2.4.3-2.el7_5.1
    fixed: vendor fix RHSA-2018:1169
  • Red Hat Enterprise Linux 6 corosync, corosynclib Red Hat Enterprise Linux 8 corosync, spausedd, corosynclib, corosync-vqsim
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.11% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • unspecified corosync

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.