CVE-2022-35409

mbedtls: An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0

CVE-2022-35409 is fixed in mbedtls on 1 platform, first by DEBIAN-CVE-2022-35409, released July 15, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.1
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0230
83rd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
mbedtls · Debian 12.15 (bookworm) 2.28.1-1 DEBIAN-CVE-2022-35409 Jul 15, 2022
mbedtls · Debian 13.5 (trixie) 2.28.1-1 DEBIAN-CVE-2022-35409 Jul 15, 2022
mbedtls · Debian 14 2.28.1-1 DEBIAN-CVE-2022-35409 Jul 15, 2022

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