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CVE-2019-0197 (GCVE-0-2019-0197)

Vulnerability from cvelistv5 – Published: 2019-06-11 21:35 – Updated: 2024-08-04 17:44
VLAI
Summary
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.
CWE
  • mod_http2, possible crash on late upgrade
References
URL Tags
https://httpd.apache.org/security/vulnerabilities… x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2019/04/02/2 mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/107665 vdb-entryx_refsource_BID
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.apache.org/thread.html/e0b8f6e858b1… x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://support.f5.com/csp/article/K44591505 x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2019061… x_refsource_CONFIRM
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://lists.apache.org/thread.html/56c2e7cc9deb… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/84a3714f0878… mailing-listx_refsource_MLIST
https://support.hpe.com/hpsc/doc/public/display?d… x_refsource_CONFIRM
https://usn.ubuntu.com/4113-1/ vendor-advisoryx_refsource_UBUNTU
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:3933 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3935 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3932 vendor-advisoryx_refsource_REDHAT
https://lists.apache.org/thread.html/rd18c3c43602… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re3d27b6250a… mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
https://lists.apache.org/thread.html/rf6449464fd8… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r06f0d87ebb6… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rc998b18880d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r03ee478b3dd… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd2fb621142e… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re473305a65b… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r76142b8c511… mailing-listx_refsource_MLIST
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache HTTP Server Affected: 2.4.34 to 2.4.38
guessed Create a notification for this product.
Date Public
2019-04-01 00:00
Show details on NVD website

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      "id": "CVE-2019-0197",
      "lastModified": "2024-11-21T04:16:27.960",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L\", \"baseScore\": 4.2, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 1.6, \"impactScore\": 2.5}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:S/C:N/I:P/A:P\", \"baseScore\": 4.9, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"SINGLE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 6.8, \"impactScore\": 4.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2019-06-11T22:29:04.170",
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      "sourceIdentifier": "security@apache.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-444\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-0197\",\"sourceIdentifier\":\"security@apache.org\",\"published\":\"2019-06-11T22:29:04.170\",\"lastModified\":\"2024-11-21T04:16:27.960\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set \\\"H2Upgrade on\\\" are unaffected by this issue.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad fue encontrada en Apache HTTP Server 2.4.34 hasta 2.4.38 y clasificada como problem\u00e1tica. Cuando se habilit\u00f3 HTTP / 2 para un http: host o H2Upgrade se habilit\u00f3 para h2 en un https: host, una solicitud de actualizaci\u00f3n de http / 1.1 a http / 2 que no fue la primera solicitud en una conexi\u00f3n podr\u00eda provocar una mala configuraci\u00f3n y un fallo. El servidor que nunca habilit\u00f3 el protocolo h2 o que solo lo habilit\u00f3 para https: y no configur\u00f3 \\\"H2Upgrade en \\\" no se ve afectado por este 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Advisory\"]},{\"url\":\"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T06:56:32+00:00",
      "cve": "CVE-2019-0197",
      "id": "CVE-2019-0197",
      "initial_release_date": "2019-02-01T00:00:00+00:00",
      "product_status:fixed": "359",
      "product_status:known_affected": "13",
      "product_status:known_not_affected": "18",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: mod_http2: possible crash on late upgrade",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-0197.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-13T00:11:22Z",
      "cve": "CVE-2019-0197",
      "id": "CVE-2019-0197",
      "initial_release_date": "2023-02-15T04:19:34Z",
      "product_status:known_affected": "123",
      "product_status:known_not_affected": "94",
      "product_status:recommended": "212",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-0197",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-0197.json",
      "version": "17"
    }
  }
}



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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.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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