Side-Channel attack in wolfSSL



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-24116
CWE-ID CWE-208
Exploitation vector Local
Public exploit N/A
Vulnerable software
 wolfSSL
Universal components / Libraries / Libraries used by multiple products

Vendor wolfSSL

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Side channel attack

EUVDB-ID: #VU54674

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-24116

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to observable timing discrepancy in base64 PEM decoding.A local user can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 2.0.3 - 4.5.0

CPE2.3 External links

https://github.com/wolfSSL/wolfssl/releases/tag/v4.8.0-stable


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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