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Red Hat: CVE-2019-12312: CVE-2019-12312 libreswan: null-pointer dereference by sending two IKEv2 packets (Multiple Advisories)

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Red Hat: CVE-2019-12312: CVE-2019-12312 libreswan: null-pointer dereference by sending two IKEv2 packets (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
05/24/2019
Created
04/09/2020
Added
04/08/2020
Modified
12/15/2023

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.

Solution(s)

  • redhat-upgrade-libreswan
  • redhat-upgrade-libreswan-debuginfo
  • redhat-upgrade-libreswan-debugsource

References

  • CVE-2019-12312
  • RHSA-2019:3391

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