SB2021110215 - Multiple vulnerabilities in wolfSSL

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Main Vulnerability Database SB2021110215

SB2021110215 - Multiple vulnerabilities in wolfSSL

Published: November 2, 2021

Security Bulletin ID SB2021110215
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Partial DoS

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 insufficient validation of user-supplied input when a specific q value is used in a maliciously crafted key while generating DSA signature. A remote attacker can pass specially crafted DSA key to the application and perform a denial of service (DoS) attack.


2) Improper Certificate Validation (CVE-ID: N/A)

CWE-ID: CWE-295 - Improper Certificate Validation

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


The vulnerability allows a remoter attacker to bypass certificate validation.

The vulnerability exists due to incorrect processing of certificates with multiple subject alternative names when given a name constraint. A remote attacker can supply a specially crafted certificate with multiple subject alternative names and bypass the certificate validation process.


Remediation

Install update from vendor's website.

References