Skip to content
Fencer Vulns
critical 9.8

CVE-2019-18609 json

An issue was discovered in amqp_handle_input in amqp_connection.c in rabbitmq-c 0.9.0.

published 2019-12-01 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8339

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

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.

Patch / fix

  • rabbitmq-c_project rabbitmq-c 0.10.0
  • librabbitmq Debian 14, Debian 13, Debian 12 0.10.0-1

debian advisories DEBIAN-CVE-2019-18609

  • librabbitmq Ubuntu 16.04 LTS 0.7.1-1ubuntu0.2
  • librabbitmq Ubuntu 18.04 LTS 0.8.0-1ubuntu0.18.04.2
  • librabbitmq Ubuntu Pro 14.04 LTS 0.4.1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2019-18609

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • librabbitmq RHEL 8 0.9.0-2.el8
  • librabbitmq RHEL 7 0.8.0-3.el7
  • librabbitmq-examples RHEL 7 0.8.0-3.el7

red hat advisories RHSA-2020:4445RHSA-2020:3949

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-18609 updated cvss 8.6

librabbitmq: integer overflow in amqp_handle_input in amqp_connection.c leads to heap-based buffer overflow

  • Red Hat OpenStack Platform 10 (Newton) Operational Tools librabbitmq, librabbitmq-tools
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) librabbitmq-devel 0.9.0-2.el8, librabbitmq-debuginfo 0.9.0-2.el8, librabbitmq-debugsource 0.9.0-2.el8, librabbitmq-tools-debuginfo 0.9.0-2.el8 Red Hat Enterprise Linux BaseOS (v. 8) librabbitmq 0.9.0-2.el8
    fixed: vendor fix RHSA-2020:4445
  • Red Hat Enterprise Linux ComputeNode (v. 7) librabbitmq 0.8.0-3.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) librabbitmq-examples 0.8.0-3.el7 Red Hat Enterprise Linux Server (v. 7) librabbitmq 0.8.0-3.el7 Red Hat Enterprise Linux Server Optional (v. 7) librabbitmq-examples 0.8.0-3.el7 Red Hat Enterprise Linux Workstation (v. 7) librabbitmq 0.8.0-3.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) librabbitmq-examples 0.8.0-3.el7
    fixed: vendor fix RHSA-2020:3949

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.32% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.