Bug 1227422 (CVE-2024-39920) - VUL-0: CVE-2024-39920: kernel: TCP: SnailLoad timing side channel in TCP
Summary: VUL-0: CVE-2024-39920: kernel: TCP: SnailLoad timing side channel in TCP
Status: NEW
Alias: CVE-2024-39920
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Kernel Bugs
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/412754/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-39920:5.9:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-07-05 07:05 UTC by SMASH SMASH
Modified: 2024-07-08 19:35 UTC (History)
5 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---
mkoutny: needinfo? (security-team)

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Description SMASH SMASH 2024-07-05 07:05:25 UTC 
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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39920
https://www.cve.org/CVERecord?id=CVE-2024-39920
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/article/neue-sicherheitsluecke-erlaubt-ueberwachung-besuchter-websites-und-angesehener-videos
https://bugzilla.redhat.com/show_bug.cgi?id=2295326