High severity7.5NVD Advisory· Published May 24, 2019· Updated Jun 17, 2026
CVE-2019-12312
CVE-2019-12312
Description
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.
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Affected products
3- Libreswan/Libreswandescription
Patches
Vulnerability mechanics
References
5- github.com/libreswan/libreswan/compare/9b1394e...3897683nvdPatchThird Party Advisory
- www.iwantacve.cn/index.php/archives/218/nvdExploitThird Party Advisory
- github.com/libreswan/libreswan/issues/246nvdThird Party Advisory
- libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txtnvd
- libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patchnvd
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