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CVE-2023-38711

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

Описание

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.

A NULL pointer dereference flaw was found in Libreswan when processing IKEv1 Quick Mode requests. When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR receives an IDcr payload with ID_FQDN, it triggers a NULL pointer dereference error. This flaw allows a malicious client or attacker to send a malformed IKEv1 Quick Mode packet, causing a crash and restart of the libreswan pluto daemon. When sent continuously, this issue leads to a denial of service attack.

Отчет

IKEv1 Quick Mode 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 6libreswanNot affected
Red Hat Enterprise Linux 7libreswanNot affected
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

Показывать по

Дополнительная информация

Статус:

Moderate
Дефект:
CWE-476
https://bugzilla.redhat.com/show_bug.cgi?id=2215952libreswan: Invalid IKEv1 Quick Mode ID causes restart

EPSS

Процентиль: 20%
0.00062
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
ubuntu
почти 2 года назад

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.

CVSS3: 6.5
nvd
почти 2 года назад

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.

CVSS3: 6.5
msrc
почти 2 года назад

Описание отсутствует

CVSS3: 6.5
debian
почти 2 года назад

An issue was discovered in Libreswan before 4.12. When an IKEv1 Quick ...

CVSS3: 7.5
github
почти 2 года назад

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.

EPSS

Процентиль: 20%
0.00062
Низкий

6.5 Medium

CVSS3

Уязвимость CVE-2023-38711