# CVE-2024-5991: wolfssl: In function MatchDomainName(), input param str is treated as a NULL terminated string despite being user provided and...

CVE-2024-5991 is fixed in wolfssl on 1 platform by DEBIAN-CVE-2024-5991 (version 5.7.2-0.1), released August 27, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-5991
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0056
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 27, 2024

## Description

In function MatchDomainName(), input param str is treated as a NULL terminated string despite being user provided and unchecked. Specifically, the function X509_check_host() takes in a pointer and length to check against, with no requirements that it be NULL terminated. If a caller was attempting to do a name check on a non-NULL terminated buffer, the code would read beyond the bounds of the input array until it found a NULL terminator.This issue affects wolfSSL: through 5.7.0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | wolfssl Debian 13.5 (trixie) | 5.7.2-0.1 | [DEBIAN-CVE-2024-5991](https://patchblox.com/security/data/fix/linux/debian-cve-2024-5991.md) | Aug 27, 2024 |

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