Total vulnerabilities in the database
A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
| Software | From | Fixed in |
|---|---|---|
| thekelleys / dnsmasq | - | 2.83 |
| fedoraproject / fedora | 32 | 32.x |
| fedoraproject / fedora | 33 | 33.x |
| debian / debian_linux | 10.0 | 10.0.x |
| arista / eos | 4.21 | 4.21.14m |
| arista / eos | 4.22 | 4.22.9m |
| arista / eos | 4.23 | 4.23.7m |
| arista / eos | 4.24 | 4.24.5m |
| arista / eos | 4.25 | 4.25.2f |