CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 5.9. Its EPSS score suggests a 86.0% probability of exploitation in the next 30 days. It may be remotely exploitable. It may lead to a denial-of-service condition.
Original NVD Description
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in get_rdata() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Related CVEs
Other vulnerabilities affecting the same vendor(s)