CVE Vulnerability

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/libreswan/libreswan/issues/246 Third Party Advisory
https://github.com/libreswan/libreswan/compare/9b1394e...3897683 Patch Third Party Advisory
http://www.iwantacve.cn/index.php/archives/218/ Exploit Third Party Advisory
https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch
https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt
Configurations

Configuration 1

cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*
Information

Published : 2019-05-24 02:29

Updated : 2020-08-24 05:37

NVD link : CVE-2019-12312

Mitre link : CVE-2019-12312

Products Affected
No products.
CWE
CWE-476

CWE-617