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 :
Nov. 21, 2024, 4:22 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.0 | HIGH | [email protected] |
Solution
- Update the Libreswan package to a version greater than 3.27.
- If applicable, update the RHEL Libreswan package based on the guidance in RHSA-2019:3391.
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 | |
| 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 |
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.
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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.iwantacve.cn/index.php/archives/218/ Added Reference https://github.com/libreswan/libreswan/compare/9b1394e...3897683 Added Reference https://github.com/libreswan/libreswan/issues/246 Added Reference https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt Added Reference https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch -
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
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.54 }} 0.00%
score
0.66720
percentile