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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-39920 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/IAIK/SnailLoad CVE, MITRE
https://news.ycombinator.com/item?id=40809629 CVE, MITRE
https://twitter.com/tugraz/status/1805272833322299412 CVE, MITRE
https://www.instagram.com/p/C8wpO1UtExw/ CVE, MITRE
https://www.rfc-editor.org/rfc/rfc9293.txt CVE, MITRE
https://www.snailload.com CVE, MITRE
https://www.snailload.com/snailload.pdf CVE, MITRE
https://www.tugraz.at/en/tu-graz/services/news-stories/tu-graz-news/singleview/article/neue-sicherheitsluecke-erlaubt-ueberwachung-besuchter-websites-und-angesehener-videos CVE, MITRE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1255 Comparison Logic is Vulnerable to Power Side-Channel Attacks CISA-ADP  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-39920
NVD Published Date:
07/03/2024
NVD Last Modified:
04/14/2026
Source:
MITRE