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Cisco Patches High-Severity Vulnerabilities in ACI Components

Cisco has patched DoS and CSRF vulnerabilities in the Application Policy Infrastructure Controller (APIC) and Nexus 9000 series switches.

Cisco on Wednesday informed customers about the availability of patches for two high-severity vulnerabilities affecting components of its Application Centric Infrastructure (ACI) software-defined networking solution.

One of these flaws, CVE-2023-20011, impacts the management interface of the Cisco Application Policy Infrastructure Controller (APIC) and Cloud Network Controller. APIC is the unified point of automation and management for ACI.

The vulnerability can be exploited by a remote, unauthenticated attacker to conduct cross-site request forgery (CSRF) attacks by tricking a user into clicking on a malicious link. The attacker could then conduct activities on the targeted system with the privileges of the compromised user.

The second high-severity issue, CVE-2023-20089, affects Cisco Nexus 9000 series Fabric switches in ACI mode, and it can be exploited for denial-of-service (DoS) attacks by an unauthenticated, adjacent attacker. The vendor noted that certain conditions need to be met for exploitation.

Both security holes were discovered internally and there is no evidence of malicious exploitation. 

In addition, Cisco has patched medium-severity flaws in several products, including a UCS Manager and FXOS software issue that exposes backup files, a command injection bug in NX-OS, a command injection in Firepower appliances, and an authentication bypass vulnerability in Nexus extenders (requires physical access). 

The networking giant has also released an informational advisory for a privilege escalation issue related to products running NX-OS software and configured for SSH authentication with an X.509v3 certificate.

Cisco on Wednesday also updated its advisory for CVE-2023-20032, a recently addressed critical vulnerability affecting the ClamAV library. The company has informed customers about the availability of technical information describing CVE-2023-20032, and the existence of a proof-of-concept (PoC) exploit. There is currently no evidence of malicious exploitation. 

Additional information can be found in Cisco’s security advisories

Related: Flaw in Cisco Industrial Appliances Allows Malicious Code to Persist Across Reboots

Related: Cisco Patches High-Severity SQL Injection Vulnerability in Unified CM

Related: Cisco Warns of Critical Vulnerability in EoL Small Business Routers

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

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