Infinite loop in HAProxy - CVE-2024-45506
Published: September 5, 2024
Vulnerability identifier: #VU96822
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-45506
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: HAProxy
Affected software:
HAProxy
HAProxy
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the h2_send() function when zero-copy forwarding for HTTP/2 is enabled. A remote attacker can consume all available system resources and cause denial of service conditions.
How to mitigate CVE-2024-45506
Install updates from vendor's website.
Sources
- https://www.haproxy.org/download/3.1/src/CHANGELOG
- https://www.mail-archive.com/haproxy%40formilux.org/msg45281.html
- https://www.mail-archive.com/haproxy%40formilux.org/msg45280.html
- http://git.haproxy.org/?p=haproxy-3.0.git%3Ba=commitdiff%3Bh=c725db17e8416ffb3c1537aea756356228ce5e3c
- http://git.haproxy.org/?p=haproxy-3.0.git%3Ba=commitdiff%3Bh=d636e515453320c6e122c313c661a8ac7d387c7f