BIND 9 TCP Flood Leads to Instability (9.18.19.18.27, 9.19.09.19.24)
CVE-2024-0760 Published on July 23, 2024
A flood of DNS messages over TCP may make the server unstable
A malicious client can send many DNS messages over TCP, potentially causing the server to become unstable while the attack is in progress. The server may recover after the attack ceases. Use of ACLs will not mitigate the attack.
This issue affects BIND 9 versions 9.18.1 through 9.18.27, 9.19.0 through 9.19.24, and 9.18.11-S1 through 9.18.27-S1.
Vulnerability Analysis
CVE-2024-0760 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2024-0760
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Affected Versions
ISC BIND 9:- Version 9.18.1, <= 9.18.27 is affected.
- Version 9.19.0, <= 9.19.24 is affected.
- Version 9.18.11-S1, <= 9.18.27-S1 is affected.
- Version 9.18.1, <= 9.18.27 is affected.
- Version 9.19.0, <= 9.19.24 is affected.
- Version 9.18.11-s1, <= 9.18.27-s1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.