high
7.5
CWE
400
Advisory Published
Advisory Published
Updated

CVE-2023-43669

First published: Thu Sep 21 2023(Updated: )

The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client handshake. The length affects both how many times a parse is attempted (e.g., thousands of times) and the average amount of data for each parse attempt (e.g., millions of bytes).

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Snapview Tungstenite<=0.20.0
rust/tungstenite<=0.20.0
0.20.1
debian/rust-tungstenite
0.24.0-3
Fedora=37
Fedora=38
Fedora=39
snapview Tungstenite Rust<=0.20.0
Fedoraproject Fedora=37
Fedoraproject Fedora=38
Fedoraproject Fedora=39

Remedy

https://github.com/github/advisory-database/pull/2752

Remedy

https://github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2

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Reference Links

Frequently Asked Questions

  • What is CVE-2023-43669?

    CVE-2023-43669 is a vulnerability in the Tungstenite crate for Rust that allows remote attackers to cause a denial of service by consuming excessive CPU resources.

  • How does CVE-2023-43669 affect the Tungstenite crate?

    CVE-2023-43669 affects the Tungstenite crate through version 0.20.0 and allows remote attackers to cause a denial of service through an excessive length of an HTTP header in a client handshake.

  • What is the severity of CVE-2023-43669?

    CVE-2023-43669 has a severity level of medium.

  • How can I fix CVE-2023-43669?

    To fix CVE-2023-43669, update the Tungstenite crate to version 0.20.1 or later.

  • Where can I find more information about CVE-2023-43669?

    You can find more information about CVE-2023-43669 in the NIST National Vulnerability Database (NVD) at https://nvd.nist.gov/vuln/detail/CVE-2023-43669.

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