CVE-2024-1300 (CVSS 5.4)

Description

A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support. When processing an unknown SNI server name assigned the default certificate instead of a mapped certificate, the SSL context is erroneously cached in the server name map, leading to memory exhaustion. This flaw allows attackers to send TLS client hello messages with fake server names, triggering a JVM out-of-memory error.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-772 CWE-772

References

Other References

https://access.redhat.com/errata/RHSA-2024:1662 https://access.redhat.com/errata/RHSA-2024:1706 https://access.redhat.com/errata/RHSA-2024:1923 https://access.redhat.com/errata/RHSA-2024:2088 https://access.redhat.com/errata/RHSA-2024:2833 https://access.redhat.com/errata/RHSA-2024:3527 https://access.redhat.com/errata/RHSA-2024:3989 https://access.redhat.com/errata/RHSA-2024:4884 https://access.redhat.com/security/cve/CVE-2024-1300 https://bugzilla.redhat.com/show_bug.cgi?id=2263139

Frequently Asked Questions

What is CVE-2024-1300? +

A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support. When processing an unknown SNI server name assigned the default certificate instead of a mapped certificate, the SSL context is erroneously cached in the server name map, leading to memory exhaustion. This flaw allows attackers to send TLS client hello messages with fake server names, triggering a JVM out-of-memory error. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-1300? +

CVE-2024-1300 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-1300? +

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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