Icloudpd: Waitress vulnerable to DoS leading to high CPU usage/resource exhaustion (CVE-2024-49769)
CVE-2024-49769 is a denial-of-service vulnerability in the waitress server used by icloudpd. When a remote client closes the connection prematurely, waitress fails to clean up the socket properly, causing the main thread to enter a busy loop attempting to write to a non-existent socket. This leads to high CPU usage and resource exhaustion. The issue affects icloudpd versions from 1.21.0 up to but not including 1.25.1. Waitress 3.0.1 includes a fix that resolves this race condition. No workarounds are available.
AI Analysis
Technical Summary
The vulnerability arises when a remote client closes the connection before waitress calls getpeername(), causing waitress to not remove the socket from its processing list. This results in the main thread continuously attempting to write to a closed socket, creating a busy loop that exhausts CPU and socket resources. An attacker can exploit this to cause a denial of service with minimal resource expenditure. The fix is included in waitress 3.0.1, which removes the race condition causing the issue.
Potential Impact
A remote attacker can cause a denial of service by exhausting available sockets and causing high CPU usage on the server running waitress, leading to resource exhaustion and potential service disruption. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Upgrade to waitress version 3.0.1 or later, which contains the fix for this race condition. No workarounds are available. Applying the official patch is the only effective mitigation.
Icloudpd: Waitress vulnerable to DoS leading to high CPU usage/resource exhaustion (CVE-2024-49769)
Description
CVE-2024-49769 is a denial-of-service vulnerability in the waitress server used by icloudpd. When a remote client closes the connection prematurely, waitress fails to clean up the socket properly, causing the main thread to enter a busy loop attempting to write to a non-existent socket. This leads to high CPU usage and resource exhaustion. The issue affects icloudpd versions from 1.21.0 up to but not including 1.25.1. Waitress 3.0.1 includes a fix that resolves this race condition. No workarounds are available.
CVSS v3.1
Score 7.5high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability arises when a remote client closes the connection before waitress calls getpeername(), causing waitress to not remove the socket from its processing list. This results in the main thread continuously attempting to write to a closed socket, creating a busy loop that exhausts CPU and socket resources. An attacker can exploit this to cause a denial of service with minimal resource expenditure. The fix is included in waitress 3.0.1, which removes the race condition causing the issue.
Potential Impact
A remote attacker can cause a denial of service by exhausting available sockets and causing high CPU usage on the server running waitress, leading to resource exhaustion and potential service disruption. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Upgrade to waitress version 3.0.1 or later, which contains the fix for this race condition. No workarounds are available. Applying the official patch is the only effective mitigation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BREW-icloudpd-CVE-2024-49769
- Osv Schema Version
- 1.7.3
- Ecosystems
- ["Homebrew"]
- Cvss Version
- 3.1
Threat ID: 6aac8e0155bf5e2cf5490384
Added to database: 09/18/2026, 01:04:01 UTC
Last enriched: 09/18/2026, 01:31:50 UTC
Last updated: 09/18/2026, 01:31:50 UTC
Views: 3
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