---
cve: "CVE-2024-49769"
severity: "HIGH"
cvss: 7.5
epss: "1.4%"
vendor: "Pylons"
kev: false
exploited: false
published: "2024-10-29 15:15:12"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T07:48:07+02:00"
---

# CVE-2024-49769

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- ae949bb428e50cf04152db56460f31c1e6d3a2a9 (Commit)
- 1ae4e894c9f76543bee06584001583fc6fa8c95c (Commit)

## Referenzen

- <https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6>
- <https://github.com/Pylons/waitress/issues/418>
- <https://github.com/Pylons/waitress/pull/435>
- <https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c>
- <https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2024-49769) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_