SB2024092358 - Gentoo update for Mbed TLS

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Observable discrepancy (CVE-ID: CVE-2022-46392)

The vulnerability allows a local user to recover an RSA private key.

The vulnerability exists due to observable discrepancy. A local user with access to local memory can recover an RSA private key after observing the victim performing a single private-key operation.

2) Out-of-bounds read (CVE-ID: CVE-2022-46393)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to heap-based buffer overread in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX. A remote attacker can perform a denial of service attack.

3) Out-of-bounds read (CVE-ID: CVE-2023-43615)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition. A remote attacker can send a malformed encrypted (or null-encrypted) record and perform a denial of service (DoS) attack.

4) Heap-based buffer overflow (CVE-ID: CVE-2023-45199)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in TLS handshake parsing with ECDH. A remote attacker can send specially crafted input to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

A TLS 1.2 server configured with MBEDTLS_USE_PSA_CRYPTO and with support for a cipher suite using ECDH and a signature is vulnerable.

5) Covert Timing Channel (CVE-ID: CVE-2024-23170)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to a timing side channel in RSA private operations. A remote attacker can perform Marvin attack and gain access to sensitive information.

6) Integer overflow (CVE-ID: CVE-2024-23775)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow in mbedtls_x509_set_extension(). A remote attacker can pass specially crafted data to the application, trigger an integer overflow and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://security.gentoo.org/glsa/202409-14