#VU98829 Spoofing attack in HAProxy - CVE-2024-49214

Vulnerability identifier: #VU98829

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-49214

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HAProxy
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: HAProxy

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due QUIC allows opening a 0-RTT session with a spoofed IP address. A remote attacker can spoof their IP address and bypass implemented IP-based security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

HAProxy: 2.9.0 - 2.9.10, 3.0.0 - 3.0.4

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External links
https://www.haproxy.org/download/3.1/src/CHANGELOG
https://github.com/haproxy/haproxy/commit/f627b9272bd8ffca6f2f898bfafc6bf0b84b7d46
https://www.mail-archive.com/haproxy%40formilux.org/msg45291.html
https://www.mail-archive.com/haproxy%40formilux.org/msg45314.html
https://www.mail-archive.com/haproxy%40formilux.org/msg45315.html
https://www.haproxy.org/download/3.0/src/CHANGELOG
https://www.haproxy.org/download/2.9/src/CHANGELOG

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.