CVE-2021-42697: Out-of-bounds Write

November 2, 2021 (updated June 16, 2022)

Akka HTTP can encounter stack exhaustion while parsing HTTP headers, which allows a remote attacker to conduct a Denial of Service attack by sending a User-Agent header with deeply nested comments.

References

akka.io/blog/
akka.io/blog/news/2021/11/02/akka-http-10.2.7-released
doc.akka.io/docs/akka-http/current/security/2021-CVE-2021-42697-stack-overflow-parsing-user-agent.html
nvd.nist.gov/vuln/detail/CVE-2021-42697

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