Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
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. This flaw allows a remote attacker, who can create valid DNS replies, 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 sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
No PoCs from references.
- https://github.com/ARPSyndicate/cve-scores
- https://github.com/AZ-X/pique
- https://github.com/DNTYO/F5_Vulnerability
- https://github.com/criminalip/CIP-NSE-Script
- https://github.com/kaosagnt/ansible-everyday
- https://github.com/klcheung99/CSCM28CW2