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TI-2023-20057 Aliases CVE-2023-38711GHSA-prwp-xrv5-5jv3

An issue was discovered in Libreswan before 4.12.

Priority LOW 30CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

An issue was discovered in Libreswan before 4.12. When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR receives an IDcr payload with ID_FQDN, a NULL pointer dereference causes a crash and restart of the pluto daemon. NOTE: the earliest affected version is 4.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00813 57th percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*4.6 to before 4.12VulnerableThe Libreswan Project
  • cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:* Versions 4.6 to before 4.12 Vulnerable ·The Libreswan Project

Remediation

Red Hat 4 advisories

  • RHSA-2025:0309 Released 2025-01-14 · Red Hat rating Moderate
    libreswan security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) libreswan-4.9-5.el9_2.4
  • RHSA-2024:10594 Released 2024-12-02 · Red Hat rating Moderate
    libreswan security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) libreswan-4.6-3.el9_0.3
  • RHSA-2023:7052 Released 2023-11-14 · Red Hat rating Moderate
    libreswan security update
    • Red Hat Enterprise Linux AppStream (v. 8) libreswan-4.12-2.el8
Show 1 more Red Hat advisories
  • RHSA-2023:6549 Released 2023-11-07 · Red Hat rating Moderate
    libreswan security update
    • Red Hat Enterprise Linux AppStream (v. 9) libreswan-4.12-1.el9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:7052
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:6549
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:10594
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2025:0309
Red Hat OpenShift Container Platform 4.15Fixed—
Red Hat OpenShift Container Platform 4.16Fixed—
Red Hat OpenShift Container Platform 4.17Fixed—
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat OpenShift Container Platform 4.17

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-38711
  2. 2026-10-03 Alias added: GHSA-prwp-xrv5-5jv3

References

Advisory 2

  • TI-2023-09114 Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and… CVSS 3.1MEDIUM 6.5
  • TI-2013-05949 Race condition in the libreswan.spec files for Red Hat Enterprise Linux (RHEL) and Fedora… CVSS 2.0HIGH 9.3
  • TI-2023-02152 Uncontrolled resource consumption in libreswan CVSS 3.1HIGH 7.5
  • TI-2026-37395 IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload CVSS 3.1HIGH 8.1
  • TI-2026-37394 IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload CVSS 3.1HIGH 8.1
  • TI-2023-14401 pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and… CVSS 3.1HIGH 7.5
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences