CVE-2001-0888 in Firmware
Summary
by MITRE
Atmel Firmware 1.3 Wireless Access Point (WAP) allows remote attackers to cause a denial of service via a SNMP request with (1) a community string other than "public" or (2) an unknown OID, which causes the WAP to deny subsequent SNMP requests.
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Analysis
by VulDB Data Team • 10/01/2025
The vulnerability identified as CVE-2001-0888 affects Atmel Firmware 1.3 Wireless Access Points, representing a significant security weakness in network infrastructure devices that can be exploited remotely to disrupt service availability. This flaw specifically targets the SNMP (Simple Network Management Protocol) implementation within the wireless access point firmware, creating a pathway for attackers to manipulate the device's operational state through carefully crafted network requests. The vulnerability demonstrates poor input validation and error handling mechanisms within the firmware's SNMP service implementation, which fails to properly process unauthorized or malformed requests.
The technical exploitation of this vulnerability occurs through two distinct attack vectors that leverage the firmware's insufficient validation of SNMP communication parameters. The first vector involves sending SNMP requests containing community strings that differ from the expected "public" value, while the second vector exploits requests with unknown or malformed Object Identifiers (OIDs). Both attack methods trigger the firmware to enter a degraded state where subsequent legitimate SNMP requests are denied, effectively creating a denial of service condition that prevents network management operations from functioning properly. This behavior aligns with CWE-20, which describes improper input validation, and demonstrates how inadequate error handling can lead to service disruption.
The operational impact of this vulnerability extends beyond simple service interruption as it compromises the network management capabilities of the affected wireless access point. Network administrators lose the ability to monitor and manage the device through SNMP, which undermines the operational integrity of the network infrastructure. The vulnerability creates a persistent state where the device becomes unmanageable until manual intervention occurs, potentially requiring device reboot or firmware reinstallation to restore normal operations. This situation is particularly concerning in enterprise environments where wireless access points serve critical network functions and require continuous monitoring and management.
Security practitioners should consider this vulnerability in relation to the broader ATT&CK framework, specifically under the T1499 category of network denial of service attacks, which includes techniques for disrupting network services through various means. The vulnerability also relates to T1566, which covers initial access through social engineering or network infrastructure manipulation, as the attack requires no authentication but can be executed from remote locations. Mitigation strategies should include implementing network segmentation to limit SNMP access to trusted management stations, configuring access control lists to restrict SNMP traffic, and applying firmware updates when available. Organizations should also consider deploying network monitoring solutions to detect anomalous SNMP traffic patterns that might indicate exploitation attempts, while ensuring that SNMP community strings are properly configured and regularly rotated to minimize potential attack surface exposure.