Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/IAIK/SnailLoad
- https://news.ycombinator.com/item?id=40809629
- https://twitter.com/tugraz/status/1805272833322299412
- https://www.instagram.com/p/C8wpO1UtExw/
- https://www.rfc-editor.org/rfc/rfc9293.txt
- https://www.snailload.com
- https://www.snailload.com/snailload.pdf
- https://www.tugraz.at/en/tu-graz/services/news-stories/tu-graz-news/singleview/a
- https://github.com/IAIK/SnailLoad
- https://news.ycombinator.com/item?id=40809629
- https://twitter.com/tugraz/status/1805272833322299412
- https://www.instagram.com/p/C8wpO1UtExw/
- https://www.rfc-editor.org/rfc/rfc9293.txt
- https://www.snailload.com
- https://www.snailload.com/snailload.pdf
FAQ
What is CVE-2024-39920?
CVE-2024-39920 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 syste...
How severe is CVE-2024-39920?
CVE-2024-39920 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-39920?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.