Non notée
CVE-2020-25686 A flaw was found in dnsmasq before version 2.83
Description
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| dnsmasq | Versions non publiées |
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A flaw was found in dnsmasq before version 2.83
Non notée