CVE-2021-40346

High

An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack,…

mitre·CWE-190·Published 2021-09-08

CVSS

7.5

EPSS

0.56

KEV

Exploits

Vendor statements (3)

cve.orgen

235 chars

An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs.

NVDes

308 chars

Se presenta un desbordamiento de enteros en HAProxy versiones 2.0 a 2.5, en la función htx_add_header() que puede ser explotada para llevar a cabo un ataque de contrabando de peticiones HTTP, permitiendo a un atacante omitir todas las ACLs configuradas de HAProxy de peticiones http y posiblemente otras ACLs

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
2.0	Primary	NVD	5.0	10.0	2.9	AV:N/AC:L/Au:N/C:N/I:P/A:N
3.1	Primary	NVD	7.5	3.9	3.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N