Buffer Overflow in Cisco ASA/FTD OSPF Causes DoS

Executive Summary

This vulnerability exists in the OSPF protocol implementation of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software. It is caused by insufficient input validation when processing OSPF update packets.

An unauthenticated, adjacent attacker can exploit this by sending specially crafted OSPF update packets, which can trigger a buffer overflow.

If OSPF authentication is enabled, the attacker must know the secret key to exploit the vulnerability.

A successful exploit causes the affected device to reload unexpectedly, resulting in a denial-of-service (DoS) condition.

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Detection Guidance

I don't know

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Impact Analysis

This vulnerability can cause affected Cisco firewall devices to reload unexpectedly, leading to a denial-of-service (DoS) condition.

Such a DoS condition can disrupt network operations, potentially causing downtime and loss of connectivity for users relying on these devices.

If an attacker exploits this vulnerability, it could impact the availability of network security infrastructure.

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Compliance Impact

I don't know

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Mitigation Strategies

To mitigate this vulnerability, ensure that OSPF authentication is enabled to require a secret key, which an attacker must know to exploit the issue.

Additionally, monitor for any unexpected device reloads that could indicate exploitation attempts.

Applying any available patches or updates from Cisco for Secure Firewall ASA Software and Secure FTD Software is recommended once released.

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