CVE-2022-29190 Header reconstruction method can be thrown into an infinite loop in Pion DTLS

What is CVE-2022-29190?

CVE-2022-29190 is a high-severity denial of service vulnerability in pion dtls, published on 20 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Prior to version 2.1.4, an attacker can send packets that sends Pion DTLS into an infinite loop when processing. Version 2.1.4 contains a patch for this issue. There are currently no known workarounds available.

Weakness: CWE-835

Which versions are affected by CVE-2022-29190?

5 open source packages ship an affected version, including github.com/pion/dtls/v2 and github.com/pion/dtls. It affects 1 product.

Products include Pion Dtls.

How do I fix CVE-2022-29190?

Upgrade github.com/pion/dtls/v2 to 2.1.4 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-29190 being exploited?

There is no known exploitation of CVE-2022-29190 in the wild and no public exploit code.

Other vulnerabilities in pion dtls

• CVE-2019-20786 Improper Authenication in Pion DTLS Critical 9.8
• CVE-2026-26014 Pion DTLS uses random nonce generation with AES GCM ciphers risks leaking the authentication key Medium 5.9
• CVE-2022-29222 Improper Certificate Validation in Pion DTLS Medium 5.9
• CVE-2022-29189 Buffer for inbound DTLS fragments has no limit Medium 5.3

Sources

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

Also known as DEBIAN-CVE-2022-29190, GHSA-cm8f-h6j3-p25c, GO-2022-0460, UBUNTU-CVE-2022-29190.