Out-of-bounds Read in Arm Mbed TLS
CVE-2022-46393
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.001
Affected products
- Arm Mbed TLS
- Trustedfirmware Mbed TLS
- Fedoraproject Fedora — versions 36, 37
Weakness classification (CWE)
References
- mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/ (Vendor Advisory)
- github.com/Mbed-TLS/mbedtls/releases/tag/v3.3.0 (Third Party Advisory, Release Notes)
- github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.2 (Third Party Advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2022-46393?
- CVE-2022-46393 is a critical-severity vulnerability in Arm Mbed TLS, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2022-12-15.
- How severe is CVE-2022-46393?
- Critical severity. CVSS v3 base score is 9.8 out of 10.