CVE-2024-39920 Information disclosure in n/a
Remote attackers can infer TCP connection content via timing side channels when clients concurrently receive slow data from attacker-controlled servers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-39920?
CVE-2024-39920 is a medium-severity vulnerability in n/a, published on 3 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-1255
Which versions are affected by CVE-2024-39920?
How do I fix CVE-2024-39920?
No fix has been published for CVE-2024-39920 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-39920 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-39920 exists.
Sources
Also known as GHSA-796p-jr7h-8vmq.