6.5
MEDIUM
CVE-2018-20190
LibSass NULL Pointer Dereference Denial of Service
Description

In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Eval::operator()(Sass::Supports_Operator*) in eval.cpp may cause a Denial of Service (application crash) via a crafted sass input file.

INFO

Published Date :

Dec. 17, 2018, 8:29 p.m.

Last Modified :

July 23, 2019, 6:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2018-20190 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 Sass-lang libsass
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-2018-20190.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
http://www.securityfocus.com/bid/106232 Third Party Advisory VDB Entry
https://github.com/sass/libsass/issues/2786 Exploit 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-2018-20190 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-20190 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]

    Aug. 14, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 24, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 23, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 28, 2018

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.securityfocus.com/bid/106232 No Types Assigned http://www.securityfocus.com/bid/106232 Third Party Advisory, VDB Entry
    Changed Reference Type https://github.com/sass/libsass/issues/2786 No Types Assigned https://github.com/sass/libsass/issues/2786 Exploit, Third Party Advisory
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:sass-lang:libsass:3.5.5:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 19, 2018

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/106232 [No Types Assigned]
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-2018-20190 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-2018-20190 weaknesses.

Exploit Prediction

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

0.34 }} -0.34%

score

0.71513

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability