CVE-2020-35884 HTTP Request smuggling in tiny_http

What is CVE-2020-35884?

CVE-2020-35884 is a medium-severity vulnerability in Fedoraproject Fedora, published on 31 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in the tiny_http crate through 2020-06-16 for Rust. HTTP Request smuggling can occur via a malformed Transfer-Encoding header.

Weakness: CWE-444

Which versions are affected by CVE-2020-35884?

3 open source packages ship an affected version, including tiny_http. It affects 2 products.

Products include Fedoraproject Fedora, Tiny-Http Project Tiny-Http.

How do I fix CVE-2020-35884?

Upgrade tiny_http to a fixed version for your release line: 0.8.0 or 0.6.3.

Is CVE-2020-35884 being exploited?

There is no known exploitation of CVE-2020-35884 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-7v2r-wxmg-mgvc, RUSTSEC-2020-0031.