CVE-2018-1000874

** DISPUTED ** PHP cebe markdown parser version 1.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in all distributed parsers allowing a malicious crafted script to be executed that can result in the lose of user data and sensitive user information. This attack can be exploited by crafting a three backtick wrapped payload with a character in front: L: "```<script>alert();</script>```". NOTE: This has been argued as a non-issue (see references) since it is not the parser's job to sanitize malicious code from a parsed document.

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/cebe/markdown/issues/166	Exploit Issue Tracking Third Party Advisory
https://github.com/cebe/markdown/issues/166#issuecomment-508230493

Configurations

Configuration 1 (hide)

cpe:2.3:a:cebe:markdown:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2018-12-20 17:29

Updated : 2024-08-05 13:15

NVD link : CVE-2018-1000874

Mitre link : CVE-2018-1000874

CVE.ORG link : CVE-2018-1000874

JSON object : View

Products Affected

cebe

markdown

CWE

CWE-79

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

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