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CVE-2023-38712

Опубликовано: 08 авг. 2023
Источник: redhat
CVSS3: 6.5

Описание

An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.

A NULL pointer dereference vulnerability was found in the Libreswan package. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state occurs. This flaw allows a malicious client or attacker to send a malformed IKEv1 Delete/Notify packet, causing a crash and restarting the libreswan pluto daemon. When sent continuously, this could lead to a denial of service attack.

Отчет

IKEv1 Delete/Notify requests are only processed when received from authenticated peers, limiting the scope of possible attackers to peers who have successfully authenticated. Within regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-476: NULL Pointer Dereference vulnerability and therefore downgrades the severity of this particular CVE from Moderate to Low. The platform incorporates secure engineering principles and controls to enforce secure coding practices, including proper memory handling and error checking, reducing the likelihood of null pointer dereference vulnerabilities. Coding standards, tools, and processes support early detection and prevention of memory-related flaws. Static code analysis identifies null dereference and related issues during development, while system monitoring detects memory errors and anomalous behavior in the event of exploitation. Additionally, the platform leverages memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to strengthen resilience against memory-related vulnerabilities.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 6libreswanOut of support scope
Red Hat Enterprise Linux 6openswanOut of support scope
Red Hat Enterprise Linux 7libreswanOut of support scope
Red Hat Enterprise Linux 8libreswanFixedRHSA-2023:705214.11.2023
Red Hat Enterprise Linux 9libreswanFixedRHSA-2023:654907.11.2023
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionslibreswanFixedRHSA-2024:1059402.12.2024
Red Hat Enterprise Linux 9.2 Extended Update SupportlibreswanFixedRHSA-2025:030914.01.2025
Red Hat OpenShift Container Platform 4.15libreswanFixedRHBA-2024:1156502.01.2025
Red Hat OpenShift Container Platform 4.16libreswanFixedRHBA-2024:1150502.01.2025
Red Hat OpenShift Container Platform 4.17libreswanFixedRHBA-2024:1152502.01.2025

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-476
https://bugzilla.redhat.com/show_bug.cgi?id=2225369libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
ubuntu
почти 2 года назад

An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.

CVSS3: 6.5
nvd
почти 2 года назад

An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.

CVSS3: 6.5
msrc
почти 2 года назад

Описание отсутствует

CVSS3: 6.5
debian
почти 2 года назад

An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an ...

CVSS3: 7.5
github
почти 2 года назад

An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.

6.5 Medium

CVSS3