PT-2021-23552 · Ivanti · Ivanti Avalanche

Published 2021-11-18 · Updated 2021-12-09 · CVE-2021-42133

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Ivanti Avalanche versions prior to 6.3.3

Description An exposed dangerous function vulnerability exists, allowing an attacker with access to the Inforail Service to perform an arbitrary file write. This issue affects Ivanti Avalanche and can be exploited by an attacker to potentially execute remote code.

Recommendations For versions prior to 6.3.3, update to version 6.3.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the Inforail Service to minimize the risk of exploitation.

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-829

CWE-434

Related Identifiers

CVE-2021-42133

ZDI-21-1301

Affected Products

Ivanti Avalanche

References · 6

• https://osv.dev/vulnerability/CVE-2021-42133 · Vendor Advisory
• https://forums.ivanti.com/s/article/Security-Alert-CVE-s-Addressed-in-Avalanche-6-3-3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42133 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-1301 · Security Note
• https://t.me/cvenotify/24335 · Telegram Post
• https://t.me/cibsecurity/33437 · Telegram Post