CVE-2021-40346 (GCVE-0-2021-40346)

Vulnerability from cvelistv5 – Published: 2021-09-08 16:40 – Updated: 2024-08-04 02:27
VLAI
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-40346\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-09-08T17:15:12.457\",\"lastModified\":\"2024-11-21T06:23:54.997\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"Se presenta un desbordamiento de enteros en HAProxy versiones 2.0 a 2.5, en la funci\u00f3n 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\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-190\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.0.0\",\"versionEndExcluding\":\"2.0.25\",\"matchCriteriaId\":\"2050D7B9-9E52-4564-9136-ABDB74F447A4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.2.0\",\"versionEndExcluding\":\"2.2.17\",\"matchCriteriaId\":\"4F0B3A48-87CC-490D-8C45-8BD6CCC01F80\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.3.0\",\"versionEndExcluding\":\"2.3.14\",\"matchCriteriaId\":\"677D5326-42B8-4DF5-A4C3-AEA5EBBA2164\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.4.0\",\"versionEndExcluding\":\"2.4.4\",\"matchCriteriaId\":\"CED60B4E-A8D6-47C8-8E62-FB1E8224E51F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev0:*:*:*:*:*:*\",\"matchCriteriaId\":\"4FC0BDE1-8904-4E26-B218-9F5FFF0F6F5D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2325B4E6-F5FE-4978-8AD7-9FDBF8D0355C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev2:*:*:*:*:*:*\",\"matchCriteriaId\":\"CD24FF4B-8E71-4111-AA2E-DC4DBC7D4961\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev3:*:*:*:*:*:*\",\"matchCriteriaId\":\"4589E520-FABF-438D-A7FB-EEDFD6EF75E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev4:*:*:*:*:*:*\",\"matchCriteriaId\":\"3F9374A2-4E60-4BD7-81B0-53A8CE8019D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev5:*:*:*:*:*:*\",\"matchCriteriaId\":\"D2291792-4194-4708-93E8-762B920B6DB0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haproxy:haproxy:2.5:dev6:*:*:*:*:*:*\",\"matchCriteriaId\":\"42A575A1-A115-4AE7-8FEF-40356A9B17CD\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"}]}]}],\"references\":[{\"url\":\"https://git.haproxy.org/?p=haproxy.git\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Vendor 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Advisory\"]},{\"url\":\"https://www.mail-archive.com/haproxy%40formilux.org\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://git.haproxy.org/?p=haproxy.git\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/haproxy/haproxy/commit/3b69886f7dcc3cfb3d166309018e6cfec9ce2c95\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Mitigation\",\"Third Party Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/r284567dd7523f5823e2ce995f787ccd37b1cc4108779c50a97c79120%40%3Cdev.cloudstack.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.apache.org/thread.html/r8a58fd7a29808e5d27ee56877745e58dc4bb041b9af94601554e2a5a%40%3Cdev.cloudstack.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A7V2IYO22LWVBGUNZWVKNTMDV4KINLFO/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MXTSBY2TEAXWZVFQM3CXHJFRONX7PEMN/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2021/dsa-4968\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.mail-archive.com/haproxy%40formilux.org\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.mail-archive.com/haproxy%40formilux.org/msg41114.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.