High severity · published May 24, 2019
CVE-2019-12312
In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart
7.5
CVSS
2.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libreswan · Libreswan
before 3.28 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12312
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-12312
Exploit
http://www.iwantacve.cn/index.php/archives/218/
Patch
https://github.com/libreswan/libreswan/compare/9b1394e...3897683
Third Party Advisory
https://github.com/libreswan/libreswan/issues/246
libreswan.org
https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt
libreswan.org
https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch
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