CVE-2020-23856
cflow Use-after-Free Denial of Service Vulnerability
Description
Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee.
INFO
Published Date :
May 18, 2021, 3:15 p.m.
Last Modified :
Nov. 7, 2023, 3:19 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
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-2020-23856.
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-2020-23856 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-23856 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 -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ -
Modified Analysis by [email protected]
Jan. 01, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 01, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ [No Types Assigned] -
Initial Analysis by [email protected]
May. 24, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 No Types Assigned https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 Exploit, Third Party Advisory Changed Reference Type https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html No Types Assigned https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html Exploit, Mailing List, Vendor Advisory Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:a:gnu:cflow:1.6:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-23856 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-2020-23856
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.01%
score
0.30051
percentile