SB2023010453 - Fedora EPEL 8 update for mbedtls

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Main Vulnerability Database SB2023010453

SB2023010453 - Fedora EPEL 8 update for mbedtls

Published: January 4, 2023

Security Bulletin ID SB2023010453
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 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.


Remediation

Install update from vendor's website.

References