CVE Details for CVE: CVE-2021-40346
Summary
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.
Timestamps | |
---|---|
Last major update | 07-11-2023 - 03:38 |
Published | 08-09-2021 - 17:15 |
Last modified | 07-11-2023 - 03:38 |
References
- https://git.haproxy.org/?p=haproxy.git
- https://www.debian.org/security/2021/dsa-4968
- https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/
- https://github.com/haproxy/haproxy/commit/3b69886f7dcc3cfb3d166309018e6cfec9ce2c95
- https://www.mail-archive.com/haproxy%40formilux.org
- https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html
- https://lists.apache.org/thread.html/r284567dd7523f5823e2ce995f787ccd37b1cc4108779c50a97c79120%40%3Cdev.cloudstack.apache.org%3E
- https://lists.apache.org/thread.html/r8a58fd7a29808e5d27ee56877745e58dc4bb041b9af94601554e2a5a%40%3Cdev.cloudstack.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A7V2IYO22LWVBGUNZWVKNTMDV4KINLFO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MXTSBY2TEAXWZVFQM3CXHJFRONX7PEMN/
Vulnerable Configurations
-
cpe:2.3:a:haproxy:haproxy:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.4.0:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.4.1:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.4.2:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.4.2:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.4.3:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.4.3:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.0:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.1:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.2:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.2:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.3:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.3:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.4:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.4:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.5:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.5:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.6:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.6:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.7:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.7:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.8:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.8:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.9:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.9:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.10:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.10:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.11:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.11:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.12:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.12:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.3.13:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.3.13:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.0:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.1:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.2:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.3:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.4:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.5:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.6:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.7:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.7:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.8:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.8:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.9:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.9:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.10:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.10:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.11:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.11:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.12:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.12:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.13:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.13:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.14:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.14:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.15:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.15:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.2.16:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.2.16:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.0:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.1:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.2:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.3:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.4:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.5:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.6:*:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.0.7:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.7:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.8:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.8:*:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.0.9:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.9:*:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.0.10:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.10:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.11:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.11:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.12:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.12:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.13:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.13:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.14:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.14:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.15:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.15:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.16:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.16:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.17:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.17:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.18:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.18:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.19:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.19:*:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.0.20:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.20:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.21:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.21:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.22:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.22:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.23:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.23:*:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.0.24:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.0.24:*:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.5:dev1:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev1:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.5:dev2:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev2:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.5:dev3:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev3:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.5:dev4:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev4:*:*:*:*:*:*
-
cpe:2.3:a:haproxy:haproxy:2.5:dev5:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev5:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.5:dev6:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev6:*:*:*:*:*:*
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cpe:2.3:a:haproxy:haproxy:2.5:dev0:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev0:*:*:*:*:*:*
-
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
-
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
-
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CAPEC
Click the CAPEC title to display a description
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Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
CWE
CVSS
Base
5.0
Impact
2.9
Exploitability
10.0
Access
Vector | Complexity | Authentication |
---|---|---|
NETWORK | LOW | NONE |
Impact
Confidentiality | Integrity | Availability |
---|---|---|
NONE | PARTIAL | NONE |
CVSS3
Base
7.5
Impact
3.6
Exploitability
3.9
Access
Attack Complexity | Attack vector | Privileges Required | Scope | User Interaction |
---|---|---|---|---|
LOW | NETWORK | NONE | UNCHANGED | NONE |
Impact
Confidentiality | Integrity | Availability |
---|---|---|
NONE | HIGH | NONE |