Cisco DNA Center Information Disclosure Vulnerability

Vulnerability

Cisco DNA Center software contains an information disclosure vulnerability due to improper handling of authentication tokens. An unauthenticated remote attacker can exploit this by sending a crafted HTTP request to an affected device. The vulnerability affects Cisco DNA Center software versions prior to the fixed release detailed in Cisco Security Advisory cisco-sa-dna-info-disc-3bz8BCgR [1].

Exploitation

An attacker does not require authentication or prior access to the target system. The attacker sends a specially crafted HTTP request to the Cisco DNA Center device. The improper token handling allows the request to bypass authentication checks, leading to exposure of sensitive data [1].

Impact

Successful exploitation results in the disclosure of sensitive device information, including configuration files. This could allow an attacker to gain insight into the network infrastructure and potentially plan further attacks. The impact is limited to information disclosure; no remote code execution or privilege escalation is indicated [1].

Mitigation

Cisco has released free software updates to fix this vulnerability. Customers should upgrade to the fixed version as specified in the Cisco Security Advisory. No workarounds are documented; upgrading is the recommended course of action. Customers with service contracts can obtain updates through normal channels; others should contact Cisco TAC [1].