PT-2022-11820 · Npm · Markdown-Link-Extractor

Denys Vozniuk · Published 2022-06-01 · Updated 2023-07-18 · CVE-2021-43308

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions markdown-link-extractor npm package (affected versions not specified)

Description The issue is related to an exponential ReDoS (Regular Expression Denial of Service) that can be triggered when an attacker supplies arbitrary input to the module's exported function. This allows for a potential denial-of-service attack.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Weakness Enumeration

CWE-1333

Related Identifiers

CVE-2021-43308

GHSA-MMH6-M7V9-5956

Affected Products

Markdown-Link-Extractor

References · 6

• 🔥 https://research.jfrog.com/vulnerabilities/markdown-link-extractor-redos-xray-211350 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-43308 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43308 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-mmh6-m7v9-5956 · Vendor Advisory
• https://github.com/tcort/markdown-link-extractor · Note
• https://t.me/cvenotify/54563 · Telegram Post