CVE-2018-1000162

Parsedown version prior to 1.7.0 contains a Cross Site Scripting (XSS) vulnerability in `setMarkupEscaped` for escaping HTML that can result in JavaScript code execution. This attack appears to be exploitable via specially crafted markdown that allows it to side step HTML escaping by breaking AST boundaries. This vulnerability appears to have been fixed in 1.7.0 and later.

CVSS v3 6.1 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector : AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/Roave/SecurityAdvisories/issues/44#issuecomment-368594409	Third Party Advisory
https://github.com/erusev/parsedown/pull/495	Third Party Advisory
https://github.com/Roave/SecurityAdvisories/issues/44#issuecomment-368594409	Third Party Advisory
https://github.com/erusev/parsedown/pull/495	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:parsedown:parsedown:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2018-04-18 19:29

Updated : 2024-11-21 03:39

NVD link : CVE-2018-1000162

Mitre link : CVE-2018-1000162

CVE.ORG link : CVE-2018-1000162

JSON object : View

Products Affected

parsedown

parsedown

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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