Vulnerability · Published Jul 3, 2024 · Assigned by mitre
CVE-2024-39920
Medium 4.3
In plain English
A medium-severity security flaw in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-1255 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://www.snailload.com
- https://www.snailload.com/snailload.pdf
- https://github.com/IAIK/SnailLoad
- https://www.rfc-editor.org/rfc/rfc9293.txt
- https://www.tugraz.at/en/tu-graz/services/news-stories/tu-graz-news/singleview/article/neue-sicherheitsluecke-erlaubt-ueberwachung-besuchter-websites-und-angesehener-videos
- https://twitter.com/tugraz/status/1805272833322299412
- https://news.ycombinator.com/item?id=40809629
- https://www.instagram.com/p/C8wpO1UtExw/