PT-2021-14811 · Lantronix · Lantronix Premierwave 2050

Matt Wiseman · Published 2021-12-22 · Updated 2022-04-28 · CVE-2021-21879

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Lantronix PremierWave 2050 version 8.9.0.0R4

Description A directory traversal issue exists in the Web Manager File Upload functionality. This allows a specially-crafted HTTP request to lead to arbitrary file overwrite. An attacker can trigger this issue by making an authenticated HTTP request.

Recommendations For Lantronix PremierWave 2050 version 8.9.0.0R4, consider restricting access to the Web Manager File Upload functionality until a fix is available. As a temporary workaround, limit the ability to make authenticated HTTP requests to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-21879

Affected Products

Lantronix Premierwave 2050

References · 4

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1323 · Exploit
• https://osv.dev/vulnerability/CVE-2021-21879 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21879 · Security Note
• https://t.me/cibsecurity/34543 · Telegram Post