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CVE-2023-2295

24
FAUCET Score

CVE-2023-2295 is a denial-of-service vulnerability in the libreswan library, affecting Red Hat Enterprise Linux 8.8 and 9.2, stemming from a regression in a prior CVE. An unauthenticated attacker can crash the pluto daemon by sending a crafted IKEv1 Aggressive Mode packet, leading to a high-severity impact on availability. While no remote code execution is possible, the vulnerability has a CVSS score of 7.5 (High) due to its network attack vector and low attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.9-1.el8CPE matchmatch criteria
cpe:2.3:a:libreswan:libreswan:4.9-1.el8:*:*:*:*:*:*:*
4.9-1.el9CPE matchmatch criteria
cpe:2.3:a:libreswan:libreswan:4.9-1.el9:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
8.8CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
73.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 55th percentile among its peer group of 51,506 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 (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libreswan-0:4.9-3.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libreswan-0:4.9-4.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.15Fixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.16Fixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.17Fixed in: libreswan-0:4.6-3.el9_0.3
View patch

Vendor Advisories (1)

redhatCVE-2023-2295Important

libreswan: Regression of CVE-2023-30570 fixes in the Red Hat Enterprise Linux

May 9, 2023

References

access.redhat.com / errata/RHSA-2023:3107
Third Party Advisory
access.redhat.com / errata/RHSA-2023:3148
Third Party Advisory
access.redhat.com / security/cve/CVE-2023-2295
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking