CVEvulnerability
CVE-2022-35409
9.1 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2022-07-15
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weaknesses
- CWE-125
Description
An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 bytes if using mbedtls_ssl_cookie_check, and possibly up to 571 bytes with a custom cookie check function.
Affected configurations
• arm mbed tls (< 2.28.1)
• trustedfirmware mbed tls (>= 3.0.0 < 3.2.0)
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- https://github.com/Mbed-TLS/mbedtls/releases Release Notes
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html Mailing List, Third Party Advisory
- https://mbed-tls.readthedocs.io/en/latest/security-advisories/advisories/mbedtls-security-advisory-2022-07.html Exploit, Mitigation, Vendor Advisory
- https://github.com/Mbed-TLS/mbedtls/releases Release Notes
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html Mailing List, Third Party Advisory
- https://mbed-tls.readthedocs.io/en/latest/security-advisories/advisories/mbedtls-security-advisory-2022-07.html Exploit, Mitigation, Vendor Advisory