CVE-2020-25681
8.1 · HIGHOverview
CVE-2020-25681 is a high-severity vulnerability affecting thekelleys dnsmasq. It was published on January 20, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Remediation
Check the references section for vendor advisories and patches from thekelleys. Update dnsmasq to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| thekelleys | dnsmasq | >= 0, < 2.83 | Affected |
References
Frequently Asked Questions
What is CVE-2020-25681?
CVE-2020-25681 is a high-severity vulnerability affecting thekelleys dnsmasq. It was published on January 20, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2020-25681?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-25681?
Check the references section for vendor advisories and patches from thekelleys. Update dnsmasq to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-25681?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-25681 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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