CVE-2020-36430
Libass Heap Based Buffer Overflow Vulnerability
Description
libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.
INFO
Published Date :
July 20, 2021, 7:15 a.m.
Last Modified :
Nov. 7, 2023, 3:22 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
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-2020-36430.
| URL | Resource |
|---|---|
| https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674 | Issue Tracking Patch Third Party Advisory |
| https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaml | Third Party Advisory |
| https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632 | Patch Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/ | |
| https://security.gentoo.org/glsa/202208-13 | 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-36430 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-36430 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/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/ -
Modified Analysis by [email protected]
Dec. 09, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202208-13 No Types Assigned https://security.gentoo.org/glsa/202208-13 Third Party Advisory -
CVE Modified by [email protected]
Aug. 10, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-13 [No Types Assigned] -
Modified Analysis by [email protected]
May. 27, 2022
Action Type Old Value New Value Changed Reference Type https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674 Patch, Third Party Advisory https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 26, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/ [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 28, 2021
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:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674 No Types Assigned https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674 Patch, Third Party Advisory Changed Reference Type https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaml No Types Assigned https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaml Third Party Advisory Changed Reference Type https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632 No Types Assigned https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632 Patch, Third Party Advisory Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:a:libass_project:libass:*:*:*:*:*:*:*:* versions from (including) 0.15.0 up to (excluding) 0.15.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-36430 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-2020-36430
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} 0.02%
score
0.42736
percentile