SB2020082614 - MitM attack in wolfSSL
Published: August 26, 2020
Security Bulletin ID
SB2020082614
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Cryptographic issues (CVE-ID: CVE-2020-24613)
CWE-ID: CWE-310 - Cryptographic Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a MitM attack.
The vulnerability exists due to incorrect implementation of TLS 1.3 protocol within the SanityCheckTls13MsgReceived() in tls13.c when processing server data in the WAIT_CERT_CR state. A remote attacker can perform a Man-in-the-Middle (MitM) attack and read or modify information passed between clients using the wolfSSL library and TLS servers.
Remediation
Install update from vendor's website.