CVSS 3.7 · Low EPSS 4,9%
Kerentanan Improperly Implemented Security Check for Standard pada thekelleys dnsmasq, fedoraproject fedora +2 lainnya. Skor CVSS 3.1 3.7 (Low) menurut NVD.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| thekelleys | dnsmasq | Semua versi sebelum 2.83 |
| fedoraproject | fedora | Versi 32 |
| fedoraproject | fedora | Versi 33 |
| debian | debian linux | Versi 10.0 |
| arista | eos | Versi 4.21 hingga sebelum 4.21.14m |
| arista | eos | Versi 4.22 hingga sebelum 4.22.9m |
| arista | eos | Versi 4.23 hingga sebelum 4.23.7m |
| arista | eos | Versi 4.24 hingga sebelum 4.24.5m |
| arista | eos | Versi 4.25 hingga sebelum 4.25.2f |