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Fencer Vulns
high 7.5

CVE-2023-30570 json

pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via unauthenticated IKEv1 Aggressive…

published 2023-05-28 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34951

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via unauthenticated IKEv1 Aggressive Mode packets. The earliest affected version is 3.28.

Patch / fix

  • libreswan Debian 12 4.10-2+deb12u1
  • libreswan Debian 13 4.11-1

debian advisories DEBIAN-CVE-2023-30570

  • libreswan openshift 4.17, openshift 4.16, openshift 4.15 4.6-3.el9_0.3
  • libreswan RHEL 8 4.5-1.el8_7.1
  • libreswan RHEL 9 4.6-3.el9_1.1
  • libreswan RHEL 8.1 E4S 3.29-7.el8_1.2
  • libreswan RHEL 8.2 TUS, RHEL 8.2 E4S, RHEL 8.2 AUS 3.29-7.el8_2.2
  • libreswan RHEL 9.0 EUS 4.6-3.el9_0.1
  • libreswan RHEL 8.4 EUS 4.3-6.el8_4.1
  • libreswan RHEL 8.6 EUS 4.5-1.el8_6.1

red hat advisories RHBA-2024:11565RHBA-2024:11505RHBA-2024:11525RHSA-2023:2126RHSA-2023:2124RHSA-2023:2121

  • libreswan AlmaLinux 8 4.9-3.el8_8
  • libreswan AlmaLinux 9 4.9-4.el9_2
  • libreswan AlmaLinux 8 4.5-1.el8_7.1

almalinux advisories ALSA-2023:3107ALSA-2023:3148ALSA-2023:2122

  • libreswan Alpine 3.17 4.9-r2

alpine advisories ALPINE-CVE-2023-30570

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libreswan CBL-Mariner 2.0 4.14-1
  • libreswan Azure Linux 3.0 4.15-1

azure linux advisories AZL-26873AZL-34934

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2023-30570 updated cvss 7.5

libreswan: Malicious IKEv1 Aggressive Mode packets can crash libreswan

  • Red Hat Enterprise Linux 6 libreswan
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) libreswan 4.5-1.el8_7.1
    fixed: vendor fix RHSA-2023:2122
  • Red Hat Enterprise Linux AppStream (v. 9) libreswan 4.6-3.el9_1.1
    fixed: vendor fix RHSA-2023:2120
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) libreswan 3.29-7.el8_2.2
    fixed: vendor fix RHSA-2023:2124
  • Red Hat Enterprise Linux AppStream E4S (v. 8.1) libreswan 3.29-7.el8_1.2
    fixed: vendor fix RHSA-2023:2126
  • Red Hat Enterprise Linux AppStream E4S (v. 8.2) libreswan 3.29-7.el8_2.2
    fixed: vendor fix RHSA-2023:2124
  • Red Hat Enterprise Linux AppStream EUS (v.8.4) libreswan 4.3-6.el8_4.1
    fixed: vendor fix RHSA-2023:2125
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) libreswan 4.5-1.el8_6.1
    fixed: vendor fix RHSA-2023:2123
show 6 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) libreswan 4.6-3.el9_0.1
    fixed: vendor fix RHSA-2023:2121
  • Red Hat Enterprise Linux AppStream TUS (v. 8.2) libreswan 3.29-7.el8_2.2
    fixed: vendor fix RHSA-2023:2124
  • Red Hat OpenShift Container Platform 4.15 libreswan 4.6-3.el9_0.3
    fixed: vendor fix RHBA-2024:11565
  • Red Hat OpenShift Container Platform 4.16 libreswan 4.6-3.el9_0.3
    fixed: vendor fix RHBA-2024:11505
  • Red Hat OpenShift Container Platform 4.17 libreswan 4.6-3.el9_0.3
    fixed: vendor fix RHBA-2024:11525
  • Red Hat Enterprise Linux 7 libreswan Red Hat OpenShift Container Platform 4.17 openshift 4.17.0-202412172334.p0.gf868289.assembly.stream.el8, openshift 4.17.0-202412172334.p0.gf868289.assembly.stream.el9, openshift-kubelet 4.17.0-202412172334.p0.gf868289.assembly.stream.el8, openshift-kubelet 4.17.0-202412172334.p0.gf868289.assembly.stream.el9, openshift-hyperkube 4.17.0-202412172334.p0.gf868289.assembly.stream.el8, openshift-hyperkube 4.17.0-202412172334.p0.gf868289.assembly.stream.el9, +6 more
    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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/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
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns 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.