CWE-771
Missing Reference to Active Allocated Resource
The product does not properly maintain a reference to a resource that has been allocated, which prevents the resource from being reclaimed.
CVE-2021-34720 (GCVE-0-2021-34720)
Vulnerability from cvelistv5
Published
2021-09-09 05:01
Modified
2024-11-07 22:00
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause the IP SLA process to crash, resulting in a denial of service (DoS) condition. This vulnerability exists because socket creation failures are mishandled during the IP SLA and TWAMP processes. An attacker could exploit this vulnerability by sending specific IP SLA or TWAMP packets to an affected device. A successful exploit could allow the attacker to exhaust the packet memory, which will impact other processes, such as routing protocols, or crash the IP SLA process.
References
| ► | URL | Tags | |||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software |
Version: n/a |
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CVE-2023-20244 (GCVE-0-2023-20244)
Vulnerability from cvelistv5
Published
2023-11-01 16:50
Modified
2024-08-02 09:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-771 - Missing Reference to Active Allocated Resource
Summary
A vulnerability in the internal packet processing of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain packets when they are sent to the inspection engine. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to deplete all 9,472 byte blocks on the device, resulting in traffic loss across the device or an unexpected reload of the device. If the device does not reload on its own, a manual reload of the device would be required to recover from this state.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense Software |
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CVE-2024-56343 (GCVE-0-2024-56343)
Vulnerability from cvelistv5
Published
2025-06-06 01:28
Modified
2025-06-09 14:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-771 - Missing Reference to Active Allocated Resource
Summary
IBM Verify Identity Access Digital Credentials 24.06 could allow an authenticated user to crash the service with a specially crafted POST request.
References
| ► | URL | Tags | |||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| IBM | Verify Identity Access Digital Credentials |
Version: 24.06 cpe:2.3:a:ibm:security_verify_access:24.06:*:*:*:*:*:*:* |
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CVE-2025-21090 (GCVE-0-2025-21090)
Vulnerability from cvelistv5
Published
2025-08-12 16:58
Modified
2025-08-12 20:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Denial of Service
- CWE-771 - Missing Reference to Active Allocated Resource
Summary
Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Intel(R) Xeon(R) processors |
Version: See references |
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Mitigation ID: MIT-47
Phases: Operation, Architecture and Design
Strategy: Resource Limitation
Description:
- Use resource-limiting settings provided by the operating system or environment. For example, when managing system resources in POSIX, setrlimit() can be used to set limits for certain types of resources, and getrlimit() can determine how many resources are available. However, these functions are not available on all operating systems.
- When the current levels get close to the maximum that is defined for the application (see CWE-770), then limit the allocation of further resources to privileged users; alternately, begin releasing resources for less-privileged users. While this mitigation may protect the system from attack, it will not necessarily stop attackers from adversely impacting other users.
- Ensure that the application performs the appropriate error checks and error handling in case resources become unavailable (CWE-703).
No CAPEC attack patterns related to this CWE.