| Package | Affected versions | Patched versions |
|---|---|---|
| dnsmasq | < 2.93 | 2.93 |
An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free