CVE-2021-40346
Description
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.
Related CPE's
References
PatchVendor Advisory
Third Party Advisory
Third Party Advisory
MitigationThird Party Advisory
ExploitMitigationThird Party Advisory
PatchThird Party Advisory
Mailing ListThird Party Advisory
Mailing ListThird Party Advisory
CvssV3 impact
BaseSeverity | HIGH |
ConfidentialityImpact | NONE |
AttackComplexity | LOW |
Scope | UNCHANGED |
AttackVector | NETWORK |
AvailabilityImpact | NONE |
IntegrityImpact | HIGH |
PrivilegesRequired | NONE |
BaseScore | 7.5 |
VectorString | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Version | 3.1 |
UserInteraction | NONE |
CvssV2 impact
AccessComplexity | LOW |
ConfidentialityImpact | NONE |
AvailabilityImpact | NONE |
IntegrityImpact | PARTIAL |
BaseScore | 5 |
VectorString | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Version | 2.0 |
AccessVector | NETWORK |
Authentication | NONE |