CVE-2019-20396
"Libyang yyparse Segmentation Fault Vulnerability"
Description
A segmentation fault is present in yyparse in libyang before v1.0-r1 due to a malformed pattern statement value during lys_parse_path parsing.
INFO
Published Date :
Jan. 22, 2020, 10:15 p.m.
Last Modified :
Nov. 21, 2024, 4:38 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2019-20396.
| URL | Resource |
|---|---|
| https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8 | Patch Third Party Advisory |
| https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 | Third Party Advisory |
| https://github.com/CESNET/libyang/issues/740 | Exploit Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html | |
| https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8 | Patch Third Party Advisory |
| https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 | Third Party Advisory |
| https://github.com/CESNET/libyang/issues/740 | Exploit Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html |
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-2019-20396 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-20396 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 https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8 Added Reference https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 Added Reference https://github.com/CESNET/libyang/issues/740 Added Reference https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Sep. 19, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html [No Types Assigned] -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-20 CWE-119 -
Initial Analysis by [email protected]
Jan. 23, 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:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8 No Types Assigned https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8 Patch, Third Party Advisory Changed Reference Type https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 No Types Assigned https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 Third Party Advisory Changed Reference Type https://github.com/CESNET/libyang/issues/740 No Types Assigned https://github.com/CESNET/libyang/issues/740 Exploit, Third Party Advisory Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:cesnet:libyang:0.11:r1:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.11:r2:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.12:r1:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.12:r2:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.13:r1:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.13:r2:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.14:r1:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.15:r1:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.16:r1:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.16:r2:*:*:*:*:*:* *cpe:2.3:a:cesnet:libyang:0.16:r3:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-20396 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-2019-20396
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} -0.06%
score
0.41893
percentile