Medium severity4.3NVD Advisory· Published Jul 3, 2024· Updated Apr 15, 2026
CVE-2024-39920
CVE-2024-39920
Description
The TCP protocol in RFC 9293 has a timing side channel that makes it easier for remote attackers to infer the content of one TCP connection from a client system (to any server), when that client system is concurrently obtaining TCP data at a slow rate from an attacker-controlled server, aka the "SnailLoad" issue. For example, the attack can begin by measuring RTTs via the TCP segments whose role is to provide an ACK control bit and an Acknowledgment Number.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- news.ycombinator.com/itemnvd
- twitter.com/tugraz/status/1805272833322299412nvd
- www.instagram.com/p/C8wpO1UtExw/nvd
- www.rfc-editor.org/rfc/rfc9293.txtnvd
- www.snailload.comnvd
- www.snailload.com/snailload.pdfnvd
- www.tugraz.at/en/tu-graz/services/news-stories/tu-graz-news/singleview/article/neue-sicherheitsluecke-erlaubt-ueberwachung-besuchter-websites-und-angesehener-videosnvd
News mentions
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