PT-2021-20929 · Thruk · Thruk

Alessandro Bosco + 3 · Published 2021-11-09 · Updated 2021-11-10 · CVE-2021-35489

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: Thruk versions 2.40-2

Description: The issue allows for Reflected XSS via the host or service parameter in the /thruk/#cgi-bin/extinfo.cgi API endpoint. An attacker could inject arbitrary JavaScript into extinfo.cgi, and the malicious payload would be triggered every time an authenticated user browses the page containing it.

Recommendations: For Thruk versions 2.40-2, consider disabling access to the /thruk/#cgi-bin/extinfo.cgi API endpoint until a patch is available. Restrict the use of the host and service parameters to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-35489

Affected Products

Thruk

References · 6

• 🔥 https://gruppotim.it/redteam · Exploit
• https://thruk.org/changelog.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-35489 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-35489 · Security Note
• https://t.me/cibsecurity/32130 · Telegram Post
• https://t.me/cvenotify/23186 · Telegram Post