PT-2021-14825 · Lantronix · Lantronix Premierwave 2050

Matt Wiseman · Published 2021-12-22 · Updated 2022-08-31 · CVE-2021-21895

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:H/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 FsTFtp functionality, allowing a specially crafted HTTP request to potentially overwrite FsTFtp files. This can be triggered by an authenticated HTTP request.

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

Exploit

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-21895

Affected Products

Lantronix Premierwave 2050

References · 4

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1337 · Exploit
• https://osv.dev/vulnerability/CVE-2021-21895 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21895 · Security Note
• https://t.me/cibsecurity/34541 · Telegram Post