7.5

CVE-2021-40346

Exploit

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.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Haproxy ≫ Haproxy Version >= 2.0.0 < 2.0.25
Haproxy ≫ Haproxy Version >= 2.2.0 < 2.2.17
Haproxy ≫ Haproxy Version >= 2.3.0 < 2.3.14
Haproxy ≫ Haproxy Version >= 2.4.0 < 2.4.4
Haproxy ≫ Haproxy Version2.5 Updatedev0
Haproxy ≫ Haproxy Version2.5 Updatedev1
Haproxy ≫ Haproxy Version2.5 Updatedev2
Haproxy ≫ Haproxy Version2.5 Updatedev3
Haproxy ≫ Haproxy Version2.5 Updatedev4
Haproxy ≫ Haproxy Version2.5 Updatedev5
Haproxy ≫ Haproxy Version2.5 Updatedev6
Debian ≫ Debian Linux Version11.0
Fedoraproject ≫ Fedora Version33
Fedoraproject ≫ Fedora Version34
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 92.83% 0.998
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 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
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:P/A:N
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.