CVE-2019-20633
GNU patch Double Free DoS Vulnerability
Description
GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file. NOTE: this issue exists because of an incomplete fix for CVE-2018-6952.
INFO
Published Date :
March 25, 2020, 5:15 p.m.
Last Modified :
Nov. 5, 2020, 2:54 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2019-20633 has a 2 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-2019-20633.
| URL | Resource |
|---|---|
| https://savannah.gnu.org/bugs/index.php?56683 | Exploit Vendor 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).
UAFuzz: Binary-level Directed Fuzzing for Use-After-Free Vulnerabilities
fuzzing
Makefile Shell M4 HTML TeX CMake C C++ OCaml Awk
UAF Fuzzing Benchmark
Shell Makefile C XSLT Roff CSS Perl M4 Objective-C DIGITAL Command Language
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-20633 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-20633 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 -
Reanalysis by [email protected]
Nov. 05, 2020
Action Type Old Value New Value Changed Reference Type https://savannah.gnu.org/bugs/index.php?56683 Exploit, Patch, Vendor Advisory https://savannah.gnu.org/bugs/index.php?56683 Exploit, Vendor Advisory -
Initial Analysis by [email protected]
Apr. 01, 2020
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://savannah.gnu.org/bugs/index.php?56683 No Types Assigned https://savannah.gnu.org/bugs/index.php?56683 Exploit, Patch, Vendor Advisory Added CWE NIST CWE-415 Added CPE Configuration OR *cpe:2.3:a:gnu:patch:*:*:*:*:*:*:*:* versions up to (including) 2.7.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-20633 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-2019-20633
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.26692
percentile