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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
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/

Frequently Asked Questions

What is the severity of CVE-2024-39920?
CVE-2024-39920 has been scored as a medium severity vulnerability.
How to fix CVE-2024-39920?
To fix CVE-2024-39920, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-39920 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-39920 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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