CVE-2023-49203: dnsserver (CVSS 7.5)

Description

Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation of low-rate DNS queries such that there is a large-sized response in a burst of traffic.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-406 CWE-406

Affected Products

Vendor	Product	Versions
technitium	dnsserver	All

References

Other References

https://gist.github.com/idealeer/89947ca07836fd0f7e9761198ca9a0f3. https://technitium.com/dns/

Frequently Asked Questions

What is CVE-2023-49203? +

Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation of low-rate DNS queries such that there is a large-sized response in a burst of traffic. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-49203? +

CVE-2023-49203 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-49203? +

CVE-2023-49203 affects products from technitium, specifically: dnsserver. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-49203? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-49203