6.1
MEDIUM
CVE-2019-9844
Khan Academy simple-markdown.js HTML Injection Vulnerability
Description

simple-markdown.js in Khan Academy simple-markdown before 0.4.4 allows XSS via a data: or vbscript: URI.

INFO

Published Date :

April 9, 2019, 2:29 a.m.

Last Modified :

Nov. 7, 2023, 3:13 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.7

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2019-9844 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-2019-9844 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 Fedoraproject fedora
1 Khanacademy simple-markdown

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).

None

Makefile JavaScript

Updated: 3 years, 10 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 1, 2020, 9:18 a.m. This repo has been linked 1 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-2019-9844 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-9844 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/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JFLP3KJVSV5VWMNEBRXLGRVYFXOV5KOG/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O5EFW655O3BXZYAPB65XEREXB2DSNSOT/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/O5EFW655O3BXZYAPB65XEREXB2DSNSOT/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/JFLP3KJVSV5VWMNEBRXLGRVYFXOV5KOG/
  • CVE Modified by [email protected]

    Apr. 15, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/O5EFW655O3BXZYAPB65XEREXB2DSNSOT/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/JFLP3KJVSV5VWMNEBRXLGRVYFXOV5KOG/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 09, 2019

    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:P/A:N)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://github.com/Khan/simple-markdown/pull/63 No Types Assigned https://github.com/Khan/simple-markdown/pull/63 Third Party Advisory
    Changed Reference Type https://www.npmjs.com/package/simple-markdown/v/0.4.4 No Types Assigned https://www.npmjs.com/package/simple-markdown/v/0.4.4 Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/ Third Party Advisory
    Added CWE CWE-79
    Added CPE Configuration OR *cpe:2.3:a:khanacademy:simple-markdown:*:*:*:*:*:node.js:*:* versions up to (excluding) 0.4.4
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
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-2019-9844 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-2019-9844 weaknesses.

Exploit Prediction

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

0.15 }} -0.04%

score

0.49849

percentile

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