Threat analysis by The RabitaNoor (RBTN) Cyber Research Center
Massive Breach of Cisco Devices via CVE-2023-20198 Exploitation
The goals of this document is to provide technical and strategic analysis of a much larger document, audio etc.
The document is a product of the RBTN - CYOI Pulpit
Photo by Yeshi Kangrang
Document Summary
Unidentified attackers have breached tens of thousands of Cisco devices by exploiting a vulnerability in Cisco's IOS XE software, designated CVE-2023-20198. The attack primarily targets telecommunications companies, with a significant number of compromised devices located in the U.S. Cisco's Talos threat intelligence group has issued a security advisory, urging immediate action. The attackers leveraged a previous vulnerability, CVE-2021-1435, to install a backdoor implant. The breach highlights the risks associated with edge computing devices, such as routers and firewalls, which are often overlooked in security assessments. Cisco is working on a software fix, but the identity of the attackers remains unknown.
Analysis
Overview
Timestamp: 2023-10-18
Title: Massive Breach of Cisco Devices via CVE-2023-20198 Exploitation
Severity: High
The attack on Cisco devices via CVE-2023-20198 highlights a sophisticated adversary targeting telecommunications. The attackers exploited a zero-day vulnerability to install backdoor implants, primarily affecting U.S. companies. The infrastructure involved compromised Cisco devices, and the victims are mainly in the telecommunications sector. The adversary's capability to exploit unpatched vulnerabilities and install persistent implants indicates a high level of sophistication.
Adversary
Adversary: The attackers remain unidentified but are likely a sophisticated group targeting telecommunications.
Motivation: Potential espionage or data theft from telecommunications companies.
Sophistication: High, given the exploitation of a zero-day vulnerability and previous CVE.
TTPs:
- Exploitation of CVE-2023-20198
- Installation of backdoor implants
Capability
Capability: The attackers demonstrated advanced capabilities by exploiting a zero-day vulnerability.
Tools: Backdoor implant
Evasion: Exploitation of unpatched vulnerabilities
Infrastructure
Description: The attack infrastructure includes compromised Cisco devices, primarily in the U.S.
Victim Profile
Targets: Telecommunications companies, primarily in the U.S., are the main victims.
Industry: Telecommunications
Assets: Cisco networking devices
Data at Risk: Network configurations, Potential customer data
Impact: High