---
cve: "CVE-2019-18609"
severity: "CRITICAL"
cvss: 9.8
epss: "68.1%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2019-12-01 22:15:10"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T12:22:54+02:00"
---

# CVE-2019-18609

> 9.8 CRITICAL

## Beschreibung

An issue was discovered in amqp_handle_input in amqp_connection.c in rabbitmq-c 0.9.0. There is an integer overflow that leads to heap memory corruption in the handling of CONNECTION_STATE_HEADER. A rogue server could return a malicious frame header that leads to a smaller target_size value than needed. This condition is then carried on to a memcpy function that copies too much data into a heap buffer.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- ffe918a5fcef72038a88054dca3c56762b1953d4 (Commit)
- fc85be7123050b91b054e45b91c78d3241a5047a (Commit)

## Referenzen

- <https://github.com/alanxz/rabbitmq-c/blob/master/ChangeLog.md>
- <https://github.com/alanxz/rabbitmq-c/commit/fc85be7123050b91b054e45b91c78d3241a5047a>
- <https://lists.debian.org/debian-lts-announce/2019/12/msg00004.html>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WA7CPNVYMF6OQNIYNLWUY6U2GTKFOKH3/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQER6XTKYMHNQR7QTHW7DJAH645WQROU/>
- <https://news.ycombinator.com/item?id=21681976>
- <https://security.gentoo.org/glsa/202003-07>
- <https://usn.ubuntu.com/4214-1/>
- <https://usn.ubuntu.com/4214-2/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-18609) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_