Multiple vulnerabilities in wolfSSL



Published: 2021-11-02
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID N/A
CWE-ID CWE-20
CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
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wolfSSL
Universal components / Libraries / Libraries used by multiple products

Vendor wolfSSL

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU57852

Risk: Low

CVSSv3.1:

CVE-ID: N/A

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 4.0 - 4.8.1


CPE2.3 External links

http://github.com/wolfSSL/wolfssl/releases/tag/v5.0.0-stable

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Improper Certificate Validation

EUVDB-ID: #VU57853

Risk: Low

CVSSv3.1:

CVE-ID: N/A

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 4.0 - 4.8.1


CPE2.3 External links

http://github.com/wolfSSL/wolfssl/releases/tag/v5.0.0-stable

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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