Vulnerability Name:

CVE-2019-9844 (CCN-158897)

Assigned:2019-03-14
Published:2019-03-14
Updated:2019-04-15
Summary:simple-markdown.js in Khan Academy simple-markdown before 0.4.4 allows XSS via a data: or vbscript: URI.
CVSS v3 Severity:6.1 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
6.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.5 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-79
Vulnerability Consequences:Cross-Site Scripting
References:Source: MITRE
Type: CNA
CVE-2019-9844

Source: XF
Type: UNKNOWN
nodejs-cve20199844-xss(158897)

Source: MISC
Type: Third Party Advisory
https://github.com/Khan/simple-markdown/pull/63

Source: FEDORA
Type: UNKNOWN
FEDORA-2019-8e7c71f45b

Source: FEDORA
Type: Third Party Advisory
FEDORA-2019-bce274cbf6

Source: FEDORA
Type: UNKNOWN
FEDORA-2019-36ce1cb623

Source: CCN
Type: NPM Web site
simple-markdown

Source: MISC
Type: Third Party Advisory
https://www.npmjs.com/package/simple-markdown/v/0.4.4

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-9844

Vulnerable Configuration:Configuration 1:
  • cpe:/a:khanacademy:simple-markdown:*:*:*:*:*:node.js:*:* (Version < 0.4.4)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:30:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:nodejs:node.js:*:*:*:*:-:*:*:*

    • * Denotes that component is vulnerable
    BACK
    khanacademy simple-markdown *
    fedoraproject fedora 30
    nodejs node.js *