PT-2021-12474 · Nec · Univerge Sv8500+1

Published 2021-01-13 · Updated 2021-01-21 · CVE-2020-5686

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: UNIVERGE SV9500 series versions V1 through V7 UNIVERGE SV8500 series versions S6 through S8

Description: The issue is related to an incorrect implementation of the authentication algorithm, allowing an attacker to access the remote system maintenance feature by sending a specially crafted request to a specific URL. This enables the attacker to obtain information.

Recommendations: For UNIVERGE SV9500 series versions V1 through V7, update to a version that fixes the authentication algorithm issue. For UNIVERGE SV8500 series versions S6 through S8, update to a version that fixes the authentication algorithm issue. As a temporary workaround, consider restricting access to the remote system maintenance feature until a patch is available.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2020-5686

Affected Products

Univerge Sv8500

Univerge Sv9500

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-5686 · Security Note
• https://osv.dev/vulnerability/CVE-2020-5686 · Vendor Advisory
• https://necplatforms.co.jp/en/press/security_adv.html · Vendor Advisory
• https://jvn.jp/en/jp/JVN38784555/index.html · Note
• https://t.me/cvenotify/8468 · Telegram Post