CVE-2023-45199
Published: 07 October 2023
Summary
CVE-2023-45199 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Trustedfirmware Mbed Tls. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 7.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-45199 is a buffer overflow vulnerability classified under CWE-120 that affects Mbed TLS versions 3.2.x through 3.4.x before 3.5 and can lead to remote code execution. The issue received a CVSS v3.1 base score of 9.8 reflecting its critical severity.
An unauthenticated attacker can exploit the flaw over the network with no user interaction required, resulting in full compromise of confidentiality, integrity, and availability on the target system.
The official Mbed TLS security advisory at https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2023-10-2/ addresses mitigation steps and patching. The associated EPSS score has remained flat at a peak of 0.0927 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-49506
Vulnerability details
Mbed TLS 3.2.x through 3.4.x before 3.5 has a Buffer Overflow that can lead to remote Code execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.