SB2019082722 - Out-of-bounds read in wolfSSL
Published: August 27, 2019 Updated: May 4, 2022
Security Bulletin ID
SB2019082722
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2019-15651)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to one-byte heap-based buffer over-read in DecodeCertExtensions in wolfcrypt/src/asn.c because reading the ASN_BOOLEAN byte is mishandled for a crafted DER certificate in GetLength_ex. A remote attacker can perform a denial of service attack.
Remediation
Install update from vendor's website.