Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2023-23009

Uncontrolled Resource Consumption

Published: Feb 21, 2023 | Modified: Mar 17, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-23009
CWEhttps://cwe.mitre.org/data/definitions/400.html

Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

NameVendorStart VersionEnd Version
LibreswanLibreswan4.9 (including)4.9 (including)
Red Hat Enterprise Linux 8RedHatlibreswan-0:4.9-2.el8_8.2*
Red Hat Enterprise Linux 9RedHatlibreswan-0:4.9-2.el9_2*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatlibreswan-0:4.6-3.el9_0.3*
Red Hat OpenShift Container Platform 4.15RedHatlibreswan-0:4.6-3.el9_0.3*
Red Hat OpenShift Container Platform 4.16RedHatlibreswan-0:4.6-3.el9_0.3*
Red Hat OpenShift Container Platform 4.17RedHatlibreswan-0:4.6-3.el9_0.3*
LibreswanUbuntubionic*
LibreswanUbuntufocal*
LibreswanUbuntukinetic*
LibreswanUbuntulunar*
LibreswanUbuntumantic*
LibreswanUbuntuoracular*
LibreswanUbuntuplucky*
LibreswanUbuntutrusty*
LibreswanUbuntuxenial*

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References

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