5.5
MEDIUM
CVE-2020-15945
Lua Segmentation Fault in Ldebug due to Inconsistent Oldpc Updates
Description

Lua through 5.4.0 has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function.

INFO

Published Date :

July 24, 2020, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 5:06 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2020-15945 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-15945 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Lua lua
: Total Affected Vendor : 1 | Products : 1
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-2020-15945.

URL Resource
http://lua-users.org/lists/lua-l/2020-07/msg00123.html Exploit Mailing List Third Party Advisory
https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3 Patch Third Party Advisory
http://lua-users.org/lists/lua-l/2020-07/msg00123.html Exploit Mailing List Third Party Advisory
https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3 Patch 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).

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marklogic/marklogic-docker

Docker image for MarkLogic Server

database docker marklogic

Makefile Shell RobotFramework XQuery

Updated: 1 month, 2 weeks ago
8 stars 12 fork 12 watcher
Born at : Aug. 16, 2021, 9:29 p.m. This repo has been linked 26 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-15945 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-15945 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 http://lua-users.org/lists/lua-l/2020-07/msg00123.html
    Added Reference https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Apr. 20, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:lua:lua:*:*:*:*:*:*:*:* versions up to (including) 5.4.0 OR *cpe:2.3:a:lua:lua:*:*:*:*:*:*:*:* versions from (including) 5.3.1 up to (excluding) 5.4.0
  • Reanalysis by [email protected]

    Aug. 11, 2020

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Initial Analysis by [email protected]

    Jul. 29, 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 http://lua-users.org/lists/lua-l/2020-07/msg00123.html No Types Assigned http://lua-users.org/lists/lua-l/2020-07/msg00123.html Exploit, Mailing List, Third Party Advisory
    Changed Reference Type https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3 No Types Assigned https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3 Patch, Third Party Advisory
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:a:lua:lua:*:*:*:*:*:*:*:* versions up to (including) 5.4.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-15945 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-2020-15945 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10669

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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