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.
Metrics
CVSS 3.0 7.5/10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.iwantacve.cn/index.php/archives/218/Exploit, Third Party Advisory
- https://github.com/libreswan/libreswan/compare/9b1394e...3897683Patch, Third Party Advisory
- https://github.com/libreswan/libreswan/issues/246Third Party Advisory
- https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt
- https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch
- http://www.iwantacve.cn/index.php/archives/218/Exploit, Third Party Advisory
- https://github.com/libreswan/libreswan/compare/9b1394e...3897683Patch, Third Party Advisory
- https://github.com/libreswan/libreswan/issues/246Third Party Advisory
- https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt
- https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch
Timeline
- Published
- May 24, 2019
- Last modified
- Jun 17, 2026
- NVD status
- Modified