CVE-2024-5991: Buffer overread in domain name matching
First published: Tue Aug 27 2024(Updated: )
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.
Credit: facts@wolfssl.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WolfSSL wolfssl | <=5.7.0 |
Remedy
Fixed in the following github pull request https://https://github.com/wolfSSL/wolfssl/pull/7604
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