Libreswan 3.27 Vulnerability: Assertion Failure and IKE Daemon Restart

Libreswan 3.27 Vulnerability: Assertion Failure and IKE Daemon Restart

CVE-2019-12312 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

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.

Learn more about our Cis Benchmark Audit For Microsoft Exchange Server.