CVE-2021-40346

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-40346
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://git.haproxy.org/?p=haproxy.git Patch Vendor Advisory
https://github.com/haproxy/haproxy/commit/3b69886f7dcc3cfb3d166309018e6cfec9ce2c95 Patch Third Party Advisory
https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/ Exploit Mitigation Third Party Advisory
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/
https://www.debian.org/security/2021/dsa-4968 Third Party Advisory
https://www.mail-archive.com/haproxy%40formilux.org
https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html
https://git.haproxy.org/?p=haproxy.git Patch Vendor Advisory
https://github.com/haproxy/haproxy/commit/3b69886f7dcc3cfb3d166309018e6cfec9ce2c95 Patch Third Party Advisory
https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/ Exploit Mitigation Third Party Advisory
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/
https://www.debian.org/security/2021/dsa-4968 Third Party Advisory
https://www.mail-archive.com/haproxy%40formilux.org
https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:2.5:dev0:*:*:*:*:*:*
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:dev3:*:*:*:*:*:*
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:dev6:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
History

21 Nov 2024, 06:23

Type Values Removed Values Added
References () https://git.haproxy.org/?p=haproxy.git - Patch, Vendor Advisory () https://git.haproxy.org/?p=haproxy.git - Patch, Vendor Advisory
References () https://github.com/haproxy/haproxy/commit/3b69886f7dcc3cfb3d166309018e6cfec9ce2c95 - Patch, Third Party Advisory () https://github.com/haproxy/haproxy/commit/3b69886f7dcc3cfb3d166309018e6cfec9ce2c95 - Patch, Third Party Advisory
References () https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/ - Exploit, Mitigation, Third Party Advisory () https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/ - Exploit, Mitigation, Third Party Advisory
References () https://lists.apache.org/thread.html/r284567dd7523f5823e2ce995f787ccd37b1cc4108779c50a97c79120%40%3Cdev.cloudstack.apache.org%3E - () https://lists.apache.org/thread.html/r284567dd7523f5823e2ce995f787ccd37b1cc4108779c50a97c79120%40%3Cdev.cloudstack.apache.org%3E -
References () https://lists.apache.org/thread.html/r8a58fd7a29808e5d27ee56877745e58dc4bb041b9af94601554e2a5a%40%3Cdev.cloudstack.apache.org%3E - () https://lists.apache.org/thread.html/r8a58fd7a29808e5d27ee56877745e58dc4bb041b9af94601554e2a5a%40%3Cdev.cloudstack.apache.org%3E -
References () 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/A7V2IYO22LWVBGUNZWVKNTMDV4KINLFO/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MXTSBY2TEAXWZVFQM3CXHJFRONX7PEMN/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MXTSBY2TEAXWZVFQM3CXHJFRONX7PEMN/ -
References () https://www.debian.org/security/2021/dsa-4968 - Third Party Advisory () https://www.debian.org/security/2021/dsa-4968 - Third Party Advisory
References () https://www.mail-archive.com/haproxy%40formilux.org - () https://www.mail-archive.com/haproxy%40formilux.org -
References () https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html - () https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html -

07 Nov 2023, 03:38

Type Values Removed Values Added
References
  • {'url': 'https://www.mail-archive.com/haproxy@formilux.org', 'name': 'https://www.mail-archive.com/haproxy@formilux.org', 'tags': ['Third Party Advisory'], 'refsource': 'MISC'}
  • {'url': 'https://www.mail-archive.com/haproxy@formilux.org/msg41114.html', 'name': 'https://www.mail-archive.com/haproxy@formilux.org/msg41114.html', 'tags': ['Mitigation', 'Third Party Advisory'], 'refsource': 'MISC'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A7V2IYO22LWVBGUNZWVKNTMDV4KINLFO/', 'name': 'FEDORA-2021-3493f9f6ab', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.apache.org/thread.html/r284567dd7523f5823e2ce995f787ccd37b1cc4108779c50a97c79120@%3Cdev.cloudstack.apache.org%3E', 'name': '[cloudstack-dev] 20210910 CVE-2021-40346 (haproxy 2.x)', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'MLIST'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MXTSBY2TEAXWZVFQM3CXHJFRONX7PEMN/', 'name': 'FEDORA-2021-cd5ee418f6', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.apache.org/thread.html/r8a58fd7a29808e5d27ee56877745e58dc4bb041b9af94601554e2a5a@%3Cdev.cloudstack.apache.org%3E', 'name': '[cloudstack-dev] 20210910 Re: CVE-2021-40346 (haproxy 2.x)', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'MLIST'}
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MXTSBY2TEAXWZVFQM3CXHJFRONX7PEMN/ -
  • () 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://www.mail-archive.com/haproxy%40formilux.org/msg41114.html -
  • () https://www.mail-archive.com/haproxy%40formilux.org -
Information

Published : 2021-09-08 17:15

Updated : 2024-11-21 06:23

NVD link : CVE-2021-40346

Mitre link : CVE-2021-40346

CVE.ORG link : CVE-2021-40346

JSON object : View

Products Affected

debian

  • debian_linux

haproxy

  • haproxy

fedoraproject

  • fedora
CWE
CWE-190

Integer Overflow or Wraparound


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