CVE-2020-12457
wolfSSL TLS DoS Denial of Service
Description
An issue was discovered in wolfSSL before 4.5.0. It mishandles the change_cipher_spec (CCS) message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in a row, the server becomes stuck in the ProcessReply() loop, i.e., a denial of service.
INFO
Published Date :
Aug. 21, 2020, 2:15 p.m.
Last Modified :
July 21, 2021, 11:39 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-12457 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-2020-12457.
| URL | Resource |
|---|---|
| https://github.com/wolfSSL/wolfssl/pull/2927 | Patch Third Party Advisory |
| https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable | Third Party Advisory |
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
CMake C++ Shell C Makefile Batchfile Perl FreeMarker Objective-C M4
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-12457 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-12457 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]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-20 CWE-835 -
Initial Analysis by [email protected]
Aug. 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://github.com/wolfSSL/wolfssl/pull/2927 No Types Assigned https://github.com/wolfSSL/wolfssl/pull/2927 Patch, Third Party Advisory Changed Reference Type https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable No Types Assigned https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable Third Party Advisory Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:* versions up to (excluding) 4.5.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-12457 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-2020-12457
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.40144
percentile