CVE-2019-17185
FreeRADIUS OpenSSL BN_CTX Concurrency DoS Vulnerability
Description
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.
INFO
Published Date :
March 21, 2020, 1:15 a.m.
Last Modified :
Nov. 21, 2024, 4:31 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 3.1 | HIGH | [email protected] |
Solution
- Update the FreeRADIUS packages.
- If using SUSE, apply the appropriate patch using YaST online_update or 'zypper patch'.
Public PoC/Exploit Available at Github
CVE-2019-17185 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2019-17185.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html | Mailing List Third Party Advisory |
| https://freeradius.org/security/ | Vendor Advisory |
| https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20 | Release Notes Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html | Mailing List Third Party Advisory |
| https://freeradius.org/security/ | Vendor Advisory |
| https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20 | Release Notes Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-17185 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-2019-17185
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).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-17185 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-17185 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://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html Added Reference https://freeradius.org/security/ Added Reference https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 22, 2022
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-20 CWE-662 -
CVE Modified by [email protected]
Apr. 26, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 26, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://freeradius.org/security/ No Types Assigned https://freeradius.org/security/ Vendor Advisory Changed Reference Type https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20 No Types Assigned https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20 Release Notes, Third Party Advisory Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.0.20
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.
0.46 }} -0.92%
score
0.61260
percentile