Cisco IOS XR JSON-RPC API improper authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS XR, Network Services Orchestrator and Small Business RV Router. The impacted element is an unknown function of the component JSON-RPC API. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2024-20381. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS XR, Network Services Orchestrator and Small Business RV Router (affected version unknown). This issue affects an unknown functionality of the component JSON-RPC API. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the JSON-RPC API feature in ConfD that is used by the web-based management interfaces of Cisco Crosswork Network Services Orchestrator (NSO), Cisco Optical Site Manager, and Cisco RV340 Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to modify the configuration of an affected application or device. This vulnerability is due to improper authorization checks on the API. An attacker with privileges sufficient to access the affected application or device could exploit this vulnerability by sending malicious requests to the JSON-RPC API. A successful exploit could allow the attacker to make unauthorized modifications to the configuration of the affected application or device, including creating new user accounts or elevating their own privileges on an affected system.

The advisory is shared at sec.cloudapps.cisco.com. The identification of this vulnerability is CVE-2024-20381 since 11/08/2023. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/26/2024). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XR
• Network Services Orchestrator
• Small Business RV Router

License

• commercial

Website

• Vendor: https://www.cisco.com/

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