7.5
HIGH
CVE-2019-12312
Libreswan IKE Daemon Null Pointer Dereference Vuln
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.

INFO

Published Date :

May 24, 2019, 2:29 p.m.

Last Modified :

Aug. 24, 2020, 5:37 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-12312 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Libreswan libreswan
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-12312.

URL Resource
http://www.iwantacve.cn/index.php/archives/218/ Exploit Third Party Advisory
https://github.com/libreswan/libreswan/compare/9b1394e...3897683 Patch Third Party Advisory
https://github.com/libreswan/libreswan/issues/246 Third 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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-12312 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-12312 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-476 CWE-617 CWE-476
  • CVE Modified by [email protected]

    Jun. 06, 2019

    Action Type Old Value New Value
    Changed 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 sending two IKEv2 packets (init_IKE and delete_IKE) in 3des_cbc mode to a Libreswan server. This affects send_v2N_spi_response_from_state in programs/pluto/ikev2_send.c when built with Network Security Services (NSS). 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.
  • CVE Modified by [email protected]

    Jun. 06, 2019

    Action Type Old Value New Value
    Changed Description In Libreswan before 3.28, an assertion failure can lead to a pluto IKE daemon restart. An attacker can trigger a NULL pointer dereference by sending two IKEv2 packets (init_IKE and delete_IKE) in 3des_cbc mode to a Libreswan server. This affects send_v2N_spi_response_from_state in programs/pluto/ikev2_send.c when built with Network Security Services (NSS). In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart. An attacker can trigger a NULL pointer dereference by sending two IKEv2 packets (init_IKE and delete_IKE) in 3des_cbc mode to a Libreswan server. This affects send_v2N_spi_response_from_state in programs/pluto/ikev2_send.c when built with Network Security Services (NSS).
    Added Reference https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch [No Types Assigned]
    Added Reference https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 28, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/libreswan/libreswan/compare/9b1394e...3897683 No Types Assigned https://github.com/libreswan/libreswan/compare/9b1394e...3897683 Patch, Third Party Advisory
    Changed Reference Type http://www.iwantacve.cn/index.php/archives/218/ No Types Assigned http://www.iwantacve.cn/index.php/archives/218/ Exploit, Third Party Advisory
    Changed Reference Type https://github.com/libreswan/libreswan/issues/246 No Types Assigned https://github.com/libreswan/libreswan/issues/246 Third Party Advisory
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:* versions up to (excluding) 3.28
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-12312 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-12312 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.54 }} 0.08%

score

0.77515

percentile

CVSS30 - Vulnerability Scoring System
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