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CVE-2016-10531

UNKNOWN
Published 2018-05-31T20:00:00Z
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No CVSS data available

Description

marked is an application that is meant to parse and compile markdown. Due to the way that marked 0.3.5 and earlier parses input, specifically HTML entities, it's possible to bypass marked's content injection protection (`sanitize: true`) to inject a `javascript:` URL. This flaw exists because `&#xNNanything;` gets parsed to what it could and leaves the rest behind, resulting in just `anything;` being left.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

HackerOne

marked node module

Affected Versions:

<=0.3.5

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Sanitization bypass using HTML Entities in marked

GHSA-vfvf-mqq8-rwqc

Advisory Details

Affected versions of `marked` are susceptible to a cross-site scripting vulnerability in link components when `sanitize:true` is configured. ## Proof of Concept This flaw exists because link URIs containing HTML entities get processed in an abnormal manner. Any HTML Entities get parsed on a best-effort basis and included in the resulting link, while if that parsing fails that character is omitted. For example: A link URI such as ``` javascript&#x58document;alert&#40;1&#41; ``` Renders a valid link that when clicked will execute `alert(1)`. ## Recommendation Update to version 0.3.6 or later.

Affected Packages

npm marked
ECOSYSTEM: ≥0 <0.3.6

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2016-10531
WEB https://github.com/chjj/marked/pull/592
WEB https://github.com/chjj/marked/pull/592/commits/2cff85979be8e7a026a9aca35542c470cf5da523
ADVISORY https://github.com/advisories/GHSA-vfvf-mqq8-rwqc
WEB https://www.npmjs.com/advisories/101

Advisory provided by GitHub Security Advisory Database. Published: February 18, 2019, Modified: September 7, 2023

References

https://nodesecurity.io/advisories/101
https://github.com/chjj/marked/pull/592/commits/2cff85979be8e7a026a9aca35542c470cf5da523
https://github.com/chjj/marked/pull/592
Published: 2018-05-31T20:00:00Z
Last Modified: 2024-09-17T04:28:55.235Z
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