CVE-2024-30156: DoS (CVSS 7.5)

Description

Varnish Cache before 7.3.2 and 7.4.x before 7.4.3 (and before 6.0.13 LTS), and Varnish Enterprise 6 before 6.0.12r6, allows credits exhaustion for an HTTP/2 connection control flow window, aka a Broke Window Attack.

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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-770 CWE-770

References

Other References

https://varnish-cache.org/docs/7.5/whats-new/changes-7.5.html#security https://varnish-cache.org/security/VSV00014.html https://varnish-cache.org/docs/7.5/whats-new/changes-7.5.html#security https://varnish-cache.org/security/VSV00014.html

Frequently Asked Questions

What is CVE-2024-30156? +

Varnish Cache before 7.3.2 and 7.4.x before 7.4.3 (and before 6.0.13 LTS), and Varnish Enterprise 6 before 6.0.12r6, allows credits exhaustion for an HTTP/2 connection control flow window, aka a Broke Window Attack. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-30156? +

CVE-2024-30156 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.

How do I check if I'm vulnerable to CVE-2024-30156? +

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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