Original Post: Much ado about Curl
The content highlights the launch of Semgrep Supply Chain, which aims to streamline the identification of software vulnerabilities by filtering out over 98% of alerts. Recently, cURL released version 8.4.0 to fix a heap corruption issue in its SOCKS5 handler, impacting versions 7.69.0 to 8.3.0. Semgrep Supply Chain users are advised to update their environments to manage this vulnerability.
Key points include:
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Affected Systems: Systems that accept arbitrary URLs without validation and use cURL or libcurl with a SOCKS5 proxy configuration.
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Exploit Details: Exploitation is complex due to modern memory safety features. Initial attempts will likely cause system crashes.
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Response Recommendations: Update system cURL and libcurl via package managers. For various programming languages (Node, Python, Rust, C#, Ruby, Go, PHP, Swift), ensure system cURL is up-to-date as they often link against it by default.
- Conclusion: Updating cURL and libcurl immediately through system package managers is crucial. Additionally, auditing dependencies to determine how they use libcurl can further secure the environment.
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