SB2021122902 - Multiple vulnerabilities in wolfSSL

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Main Vulnerability Database SB2021122902

SB2021122902 - Multiple vulnerabilities in wolfSSL

Published: December 29, 2021

Security Bulletin ID SB2021122902
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Input validation error (CVE-ID: N/A)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


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

The vulnerability exists due to processing hello packets of the incorrect side in wolfSSL client. A remote attacker with ability to perform MitM attack can cause denial of service. this affects connections using TLS v1.2 or lesser protocol.


2) Resource management error (CVE-ID: N/A)

CWE-ID: CWE-399 - Resource Management Errors

CVSSv4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to a client side session resumption issue in wolfSSL, when the session resumption cache has been filled up. A remote attacker can hijack session resumption and perform MitM attack against a wolfSSL client or a proxy server that is using wolfSSL to verifying peers.


Remediation

Install update from vendor's website.

References