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    CVE-2019-12312

    In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart. An attacker can trigger a NULL pointer dereference by initiating an IKEv2 IKE_SA_INIT exchange, followed by a bogus INFORMATIONAL exchange instead of the normallly expected IKE_AUTH exchange. This affects send_v2N_spi_response_from_state() in programs/pluto/ikev2_send.c that will then trigger a NULL pointer dereference leading to a restart of libreswan.

    Published:May 12, 2019
    Last Modified:Nov 21, 2024
    EPS:May 24, 2019
    EPSS Score:0.00542
    CVSS Score:7.5

    Affected Products

    Vendor
    Libreswan
    Product
    Libreswan
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://www.iwantacve.cn/index.php/archives/218/http://www.iwantacve.cn/index.php/archives/218/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-50721 (CVSS 8.1) — Libreswan, via the function RSA_authenticate_hash_signature_raw_rsa(), did not correctly verify the length of …
    CVE-2026-12413 (CVSS 7.5) — An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploi…
    CVE-2024-3652 (CVSS 6.5) — The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifyin…
    CVE-2023-38710 (CVSS 6.5) — An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPse…
    CVE-2023-38711 (CVSS 6.5) — An issue was discovered in Libreswan before 4.12. When an IKEv1 Quick Mode connection configured with ID_IPV4_…
    CVE-2023-38712 (CVSS 6.5) — An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange p…
    CVE-2023-2295 (CVSS 7.5) — A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode p…
    CVE-2023-30570 (CVSS 7.5) — pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via una…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High