tmccombs tls-listener up to 0.9.x TlsListener::new Slowloris resource consumption

Summaryinfo

A vulnerability, which was classified as critical, has been found in tmccombs tls-listener up to 0.9.x. This vulnerability affects the function TlsListener::new. The manipulation leads to resource consumption. This vulnerability is referenced as CVE-2024-28854. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in tmccombs tls-listener up to 0.9.x. It has been rated as critical. This issue affects the function TlsListener::new. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

tls-listener is a rust lang wrapper around a connection listener to support TLS. With the default configuration of tls-listener, a malicious user can open 6.4 `TcpStream`s a second, sending 0 bytes, and can trigger a DoS. The default configuration options make any public service using `TlsListener::new()` vulnerable to a slow-loris DoS attack. This impacts any publicly accessible service using the default configuration of tls-listener in versions prior to 0.10.0. Users are advised to upgrade. Users unable to upgrade may mitigate this by passing a large value, such as `usize::MAX` as the parameter to `Builder::max_handshakes`.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2024-28854 since 03/11/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 0.10.0 eliminates this vulnerability. Applying the patch d5a7655d6ea9e53ab57c3013092c5576da964bc4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• tmccombs

Name

• tls-listener

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9

License

• open-source

Website

• Product: https://github.com/tmccombs/tls-listener/

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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