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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.
Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • mod_http2, possible crash on late upgrade
Assigner
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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    "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.


Detection rules are retrieved from Rulezet.


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.