PT-2020-17148 · V Sol · V-Sol V1600D4L+1

Alexandre Torres + 3 · Published 2020-11-29 · Updated 2021-07-21 · CVE-2020-29379

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions V-SOL V1600D4L version 1.01.49 V-SOL V1600D-MINI version 1.01.48

Description An issue was discovered on V-SOL OLT devices. During the process of updating the firmware, the update script starts a telnetd -l /bin/sh process that does not require authentication for TELNET access.

Recommendations For V-SOL V1600D4L version 1.01.49, consider disabling the telnetd process until a patch is available. For V-SOL V1600D-MINI version 1.01.48, restrict access to the update script to minimize the risk of exploitation.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2020-29379

Affected Products

V-Sol V1600D-Mini

V-Sol V1600D4L

References · 5

• 🔥 https://seclists.org/fulldisclosure/2020/Jul/14 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-29379 · Security Note
• https://osv.dev/vulnerability/CVE-2020-29379 · Vendor Advisory
• https://t.me/cibsecurity/16921 · Telegram Post
• https://t.me/cvenotify/6389 · Telegram Post