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CVE-2018-1084

26
FAUCET Score

CVE-2018-1084 describes an integer overflow vulnerability in the totemcrypto.c component of Corosync versions prior to 2.4.4, affecting various distributions including Canonical, Debian, and Red Hat. This vulnerability carries a CVSS v3.1 score of 7.5 (High), indicating a network-exploitable flaw with low attack complexity that can lead to high availability impact. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.3.0, < 2.4.4CPE matchmatch criteria
cpe:2.3:a:corosync:corosync:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.17%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0317 is in the 76th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: corosync-0:2.4.3-2.el7_5.1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: corosync

Vendor Advisories (1)

redhatCVE-2018-1084Important

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

Apr 12, 2018

References

access.redhat.com / errata/RHSA-2018:1169
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/202107-01
Third Party Advisory
usn.ubuntu.com / 4000-1
Third Party Advisory
debian.org / security/2018/dsa-4174
Third Party Advisory
securityfocus.com / bid/103758
Third Party AdvisoryVDB Entry