medium
6.5
CWE
79
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2021-3377: XSS

First published: Fri Jan 29 2021(Updated: )

A flaw was found in npm package ansi_up versions < 5.0.0 when parsing untrusted user input. An attacker could take advantage of this by introducing ANSI escape codes to inject arbitrary HTML and JavaScript in result mounting a cross-site scripting (XSS) attack.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
npm/ansi_up<5.0.0
5.0.0
IBM Cognos Analytics<=12.0.0-12.0.2
IBM Cognos Analytics<=11.2.0-11.2.4 FP3
Ansi Up<5.0.0

Remedy

https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2021-3377?

    CVE-2021-3377 is classified as a high severity vulnerability due to its potential for cross-site scripting (XSS) attacks.

  • How do I fix CVE-2021-3377?

    To fix CVE-2021-3377, you should update the ansi_up package to version 5.0.0 or later.

  • What types of software are affected by CVE-2021-3377?

    CVE-2021-3377 affects npm package ansi_up versions below 5.0.0, particularly in applications using affected versions like IBM Cognos Analytics.

  • Can CVE-2021-3377 lead to data breaches?

    Yes, CVE-2021-3377 can potentially lead to data breaches by allowing attackers to inject malicious scripts into web applications.

  • Is there a workaround for CVE-2021-3377?

    The most effective workaround for CVE-2021-3377 is to update the ansi_up package to a secure version, as no temporary fix is provided.

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