Weakness · CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Input is copied into a fixed-size buffer without checking its length, overwriting whatever follows.
Official CWE name. Full definition on cwe.mitre.org
In the news
CVEs with this weakness that SecurityTabs has covered, newest first.
How attackers exploit it
Typical ATT&CK techniques for this class of weakness across CISA's Known Exploited Vulnerabilities (CTID mapping).
How it's exploited
What the attacker gets
Controls that stop it
NIST SP 800-53 controls that mitigate the most of those techniques.
- SI-3Malicious Code ProtectionSystem and Information Integrity · mitigates 10 techniques
- SI-4System MonitoringSystem and Information Integrity · mitigates 10 techniques
- CA-7Continuous MonitoringSecurity Assessment and Authorization · mitigates 9 techniques
- CM-6Configuration SettingsConfiguration Management · mitigates 9 techniques
- AC-4Information Flow EnforcementAccess Control · mitigates 8 techniques
- CM-7Least FunctionalityConfiguration Management · mitigates 8 techniques
- AC-6Least PrivilegeAccess Control · mitigates 7 techniques
- CM-2Baseline ConfigurationConfiguration Management · mitigates 7 techniques
- CM-8System Component InventoryConfiguration Management · mitigates 7 techniques
- SC-7Boundary ProtectionSystem and Communications Protection · mitigates 7 techniques
Weaknesses from each CVE's CVE Record (CWE, © MITRE). Techniques: MITRE ATT&CK®. Technique ↔ control and CVE ↔ technique links: Center for Threat-Informed Defense Mappings Explorer (NIST SP 800-53 rev5; CISA KEV). Plain-language explainers are SecurityTabs editorial.