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Fencer Vulns
medium 5.3

CVE-2024-49214 json

QUIC in HAProxy 3.1.x before 3.1-dev7, 3.0.x before 3.0.5, and 2.9.x before 2.9.11 allows opening a 0-RTT session with a spoofed IP address.

published 2024-10-14 2 y ago modified 2026-06-17 4 mo ago also BIT-haproxy-2024-49214 , EUVD-2024-43285

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

QUIC in HAProxy 3.1.x before 3.1-dev7, 3.0.x before 3.0.5, and 2.9.x before 2.9.11 allows opening a 0-RTT session with a spoofed IP address. This can bypass the IP allow/block list functionality.

Patch / fix

  • bitnami haproxy 2.9.11, 3.0.5
  • haproxy haproxy 2.9.11, 3.0.5, 3.1-dev7
  • haproxy Debian 14, Debian 13 2.9.11-1

debian advisories DEBIAN-CVE-2024-49214

  • haproxy openSUSE Tumbleweed 3.0.5+git0.8e879a52e-2.1

opensuse advisories openSUSE-SU-2024:14402-1

  • haproxy CBL-Mariner 2.0 2.4.24-1

azure linux advisories AZL-50333

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2024-49214 updated cvss 5.3

haproxy: Spoofed IP Bypass in HAProxy QUIC Listener 0-RTT Sessions

  • Red Hat Ceph Storage 5 haproxy, haproxy22 Red Hat Enterprise Linux 7 haproxy Red Hat Enterprise Linux 8 haproxy Red Hat Enterprise Linux 9 haproxy Red Hat OpenShift Container Platform 4 haproxy, haproxy18, haproxy20, haproxy22, haproxy26, haproxy28
    not affected: vulnerable code not present

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AC:L/AV:N/A:N/C:N/I:L/PR:N/S:U/UI:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami haproxy
<2.9.11
>=3.0.0, <3.0.5
2.9.11
3.0.5

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.