PT-2020-4946 · Cisco · Cisco Expressway

Christian Mehlmauer · Published 2020-11-16 · Updated 2020-12-02 · CVE-2020-3482

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Cisco Expressway software (affected versions not specified)

Description: A vulnerability in the Traversal Using Relays around NAT (TURN) server component could allow an unauthenticated, remote attacker to bypass security controls and send network traffic to restricted destinations. The issue is due to improper validation of specific connection information by the TURN server within the affected software. An attacker could exploit this by sending specially crafted network traffic to the affected software, potentially allowing them to gain unauthorized network access.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Improper Privilege Management

Weakness Enumeration

CWE-284

CWE-269

Related Identifiers

BDU:2020-05521

CVE-2020-3482

Affected Products

Cisco Expressway

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-3482 · Security Note
• https://bdu.fstec.ru/vul/2020-05521 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-Expressway-8J3yZ7hV · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3482 · Vendor Advisory
• https://t.me/cibsecurity/16549 · Telegram Post