PT-2023-12102 · Mrswitch · Hellojs

Martinzhou2015 · Published 2023-08-11 · Updated 2023-08-16 · CVE-2021-26505

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions MrSwitch hello.js versions 1.18.6 through 1.18.7

Description A prototype pollution issue allows remote attackers to execute arbitrary code via the hello.utils.extend function. This enables attackers to manipulate the prototype chain, potentially leading to code execution. The estimated number of potentially affected devices worldwide is not specified. There is no information about real-world incidents where this issue was exploited.

Recommendations For MrSwitch hello.js versions 1.18.6 through 1.18.7, update to version 1.18.8 or later to resolve the issue. As a temporary workaround, consider disabling the hello.utils.extend function until a patch is available. Restrict access to the hello.utils.extend function to minimize the risk of exploitation.

Fix

Prototype Pollution

Weakness Enumeration

CWE-1321

Related Identifiers

CVE-2021-26505

GHSA-G3VF-47FV-8F3C

Affected Products

Hellojs

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2021-26505 · Security Note
• https://osv.dev/vulnerability/GHSA-g3vf-47fv-8f3c · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-26505 · Vendor Advisory
• https://github.com/MrSwitch/hello.js/issues/634 · Note
• https://github.com/MrSwitch/hello.js/commit/7ab50aeff2d41991f08d4ad6c0481125eea8f6b7 · Note
• https://github.com/MrSwitch/hello.js · Note
• https://t.me/cibsecurity/68363 · Telegram Post
• https://twitter.com/CVEnew/status/1690264367386824704 · Twitter Post
• https://t.me/cvenotify/56660 · Telegram Post