CVE-2022-44608: Uncontrolled Resource Consumption in Cybozu, Inc. Cybozu Remote Service
Uncontrolled resource consumption vulnerability in Cybozu Remote Service 4.0.0 to 4.0.3 allows a remote authenticated attacker to consume huge storage space, which may result in a denial-of-service (DoS) condition.
AI Analysis
Technical Summary
CVE-2022-44608 is a high-severity vulnerability affecting Cybozu Remote Service versions 4.0.0 through 4.0.3. This vulnerability is classified under CWE-400, which pertains to uncontrolled resource consumption. Specifically, the flaw allows a remote attacker who has authenticated access to the service to trigger excessive consumption of storage resources. The vulnerability does not require user interaction and can be exploited remotely without elevated privileges beyond authentication. The uncontrolled resource consumption can lead to a denial-of-service (DoS) condition by exhausting available storage space, potentially causing service disruption or failure. The CVSS 3.1 base score of 7.5 reflects the high impact on availability (A:H) with no impact on confidentiality or integrity, and the attack vector is network-based with low attack complexity and no user interaction required. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk to organizations relying on Cybozu Remote Service for remote management or support functions. The lack of a patch link indicates that remediation may require vendor intervention or configuration changes. Given the nature of the vulnerability, attackers with valid credentials could repeatedly perform actions that consume storage, leading to resource exhaustion and service outages, which could disrupt business operations and impact dependent systems.
Potential Impact
For European organizations utilizing Cybozu Remote Service versions 4.0.0 to 4.0.3, this vulnerability presents a substantial risk to service availability. The uncontrolled storage consumption can cause denial-of-service conditions, potentially interrupting remote support and management capabilities critical for business continuity. This is especially impactful for sectors relying on continuous remote service access, such as finance, healthcare, and manufacturing. The disruption could delay incident response, maintenance, and operational workflows, leading to financial losses and reputational damage. Additionally, organizations with limited storage capacity or inadequate monitoring may experience faster degradation of service. Since exploitation requires authentication, insider threats or compromised credentials increase risk. The absence of confidentiality and integrity impacts reduces the risk of data breaches but does not mitigate the operational disruption caused by service unavailability. European entities with stringent uptime requirements and regulatory obligations around service continuity must prioritize addressing this vulnerability to avoid compliance issues and operational risks.
Mitigation Recommendations
Immediately audit and monitor storage usage on Cybozu Remote Service instances to detect abnormal consumption patterns indicative of exploitation attempts. Restrict and tightly control authentication credentials to the Cybozu Remote Service, implementing strong password policies and multi-factor authentication where possible to reduce risk of credential compromise. Implement rate limiting or throttling mechanisms on resource-intensive operations within the service to prevent excessive storage consumption by authenticated users. Isolate Cybozu Remote Service deployments in segmented network zones with strict access controls to limit exposure and lateral movement in case of compromise. Engage with Cybozu, Inc. support channels to obtain patches or official remediation guidance, and apply updates as soon as they become available. Develop and test incident response plans specifically for DoS scenarios caused by resource exhaustion, including rapid restoration procedures and resource cleanup scripts. Regularly review and update logging and alerting configurations to ensure timely detection of anomalous storage usage patterns. Consider deploying additional storage capacity or implementing automated cleanup policies as a temporary mitigation to reduce impact while awaiting patches.
Affected Countries
Japan, Germany, France, United Kingdom, Netherlands, Italy, Spain
CVE-2022-44608: Uncontrolled Resource Consumption in Cybozu, Inc. Cybozu Remote Service
Description
Uncontrolled resource consumption vulnerability in Cybozu Remote Service 4.0.0 to 4.0.3 allows a remote authenticated attacker to consume huge storage space, which may result in a denial-of-service (DoS) condition.
AI-Powered Analysis
Technical Analysis
CVE-2022-44608 is a high-severity vulnerability affecting Cybozu Remote Service versions 4.0.0 through 4.0.3. This vulnerability is classified under CWE-400, which pertains to uncontrolled resource consumption. Specifically, the flaw allows a remote attacker who has authenticated access to the service to trigger excessive consumption of storage resources. The vulnerability does not require user interaction and can be exploited remotely without elevated privileges beyond authentication. The uncontrolled resource consumption can lead to a denial-of-service (DoS) condition by exhausting available storage space, potentially causing service disruption or failure. The CVSS 3.1 base score of 7.5 reflects the high impact on availability (A:H) with no impact on confidentiality or integrity, and the attack vector is network-based with low attack complexity and no user interaction required. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk to organizations relying on Cybozu Remote Service for remote management or support functions. The lack of a patch link indicates that remediation may require vendor intervention or configuration changes. Given the nature of the vulnerability, attackers with valid credentials could repeatedly perform actions that consume storage, leading to resource exhaustion and service outages, which could disrupt business operations and impact dependent systems.
Potential Impact
For European organizations utilizing Cybozu Remote Service versions 4.0.0 to 4.0.3, this vulnerability presents a substantial risk to service availability. The uncontrolled storage consumption can cause denial-of-service conditions, potentially interrupting remote support and management capabilities critical for business continuity. This is especially impactful for sectors relying on continuous remote service access, such as finance, healthcare, and manufacturing. The disruption could delay incident response, maintenance, and operational workflows, leading to financial losses and reputational damage. Additionally, organizations with limited storage capacity or inadequate monitoring may experience faster degradation of service. Since exploitation requires authentication, insider threats or compromised credentials increase risk. The absence of confidentiality and integrity impacts reduces the risk of data breaches but does not mitigate the operational disruption caused by service unavailability. European entities with stringent uptime requirements and regulatory obligations around service continuity must prioritize addressing this vulnerability to avoid compliance issues and operational risks.
Mitigation Recommendations
Immediately audit and monitor storage usage on Cybozu Remote Service instances to detect abnormal consumption patterns indicative of exploitation attempts. Restrict and tightly control authentication credentials to the Cybozu Remote Service, implementing strong password policies and multi-factor authentication where possible to reduce risk of credential compromise. Implement rate limiting or throttling mechanisms on resource-intensive operations within the service to prevent excessive storage consumption by authenticated users. Isolate Cybozu Remote Service deployments in segmented network zones with strict access controls to limit exposure and lateral movement in case of compromise. Engage with Cybozu, Inc. support channels to obtain patches or official remediation guidance, and apply updates as soon as they become available. Develop and test incident response plans specifically for DoS scenarios caused by resource exhaustion, including rapid restoration procedures and resource cleanup scripts. Regularly review and update logging and alerting configurations to ensure timely detection of anomalous storage usage patterns. Consider deploying additional storage capacity or implementing automated cleanup policies as a temporary mitigation to reduce impact while awaiting patches.
Affected Countries
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Technical Details
- Data Version
- 5.1
- Assigner Short Name
- jpcert
- Date Reserved
- 2022-11-20T00:00:00.000Z
- Cisa Enriched
- true
Threat ID: 682d9847c4522896dcbf5b45
Added to database: 5/21/2025, 9:09:27 AM
Last enriched: 6/21/2025, 5:53:27 PM
Last updated: 8/12/2025, 2:43:31 AM
Views: 13
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