PT-2021-21974 · Unknown · Leostream Connection Broker

Scott Goodwin · CVE-2021-38157 · Published 2021-08-06 · Updated 2024-08-04

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: LeoStream Connection Broker versions 9.x before 9.0.34.3

Description: The issue allows Unauthenticated Reflected XSS via the "/index.pl" API endpoint, specifically through the user parameter. This affects products that are no longer supported by the maintainer.

Recommendations: For versions prior to 9.0.34.3, as a temporary workaround, consider restricting access to the "/index.pl" API endpoint to minimize the risk of exploitation. Avoid using the user parameter in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-38157

Affected Products

Leostream Connection Broker

References · 9

• 🔥 https://gist.github.com/erud1te-sec/5c85924cb78ba85af42e0b7b62a5ec91 · Exploit
• https://osv.dev/vulnerability/CVE-2021-38157 · Vendor Advisory
• https://leostream.com/resources-2/product-lifecycle · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-38157 · Security Note
• https://leostream.com · Vendor Advisory
• https://t.me/cvenotify/19308 · Telegram Post
• https://t.me/cvenotify/88882 · Telegram Post
• https://t.me/cibsecurity/26963 · Telegram Post
• https://dgccpa.com · Note