CVE-2019-3822 (GCVE-0-2019-3822)

Vulnerability from cvelistv5 – Published: 2019-02-06 20:00 – Updated: 2026-04-15 20:52
VLAI
Summary
libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an outgoing NTLM type-3 header (`lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()`), generates the request HTTP header contents based on previously received data. The check that exists to prevent the local buffer from getting overflowed is implemented wrongly (using unsigned math) and as such it does not prevent the overflow from happening. This output data can grow larger than the local buffer if very large 'nt response' data is extracted from a previous NTLMv2 header provided by the malicious or broken HTTP server. Such a 'large value' needs to be around 1000 bytes or more. The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header.
Severity
7.1 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
The curl Project curl Affected: 7.64.0
Create a notification for this product.
Date Public
2019-02-06 00:00
Show details on NVD website
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      "id": "CVE-2019-3822",
      "lastModified": "2024-11-21T04:42:36.923",
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      "published": "2019-02-06T20:29:00.353",
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The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-121\", \"description\": \"CWE-121\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2019-11-06T00:08:00.000Z\"}, \"x_legacyV4Record\": {\"impact\": {\"cvss\": [[{\"version\": \"3.0\", \"vectorString\": \"7.1/CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H\"}]]}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"7.64.0\"}]}, \"product_name\": \"curl\"}]}, \"vendor_name\": \"The curl Project\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://security.gentoo.org/glsa/201903-03\", \"name\": \"GLSA-201903-03\", \"refsource\": \"GENTOO\"}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3822\", \"name\": \"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3822\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://www.debian.org/security/2019/dsa-4386\", \"name\": \"DSA-4386\", \"refsource\": \"DEBIAN\"}, {\"url\": \"https://curl.haxx.se/docs/CVE-2019-3822.html\", \"name\": \"https://curl.haxx.se/docs/CVE-2019-3822.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190315-0001/\", \"name\": \"https://security.netapp.com/advisory/ntap-20190315-0001/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://usn.ubuntu.com/3882-1/\", \"name\": \"USN-3882-1\", \"refsource\": \"UBUNTU\"}, {\"url\": \"http://www.securityfocus.com/bid/106950\", \"name\": \"106950\", \"refsource\": \"BID\"}, {\"url\": \"https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f@%3Cdevnull.infra.apache.org%3E\", \"name\": \"[infra-devnull] 20190404 [GitHub] [incubator-openwhisk-runtime-ballerina] falkzoll commented on issue #15: Update to new base image jdk8u202-b08_openj9-0.12.1.\", \"refsource\": \"MLIST\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf\", \"name\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html\", \"name\": \"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html\", \"name\": \"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190719-0004/\", \"name\": \"https://security.netapp.com/advisory/ntap-20190719-0004/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.f5.com/csp/article/K84141449\", \"name\": \"https://support.f5.com/csp/article/K84141449\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.f5.com/csp/article/K84141449?utm_source=f5support\u0026amp;utm_medium=RSS\", \"name\": \"https://support.f5.com/csp/article/K84141449?utm_source=f5support\u0026amp;utm_medium=RSS\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3701\", \"name\": \"RHSA-2019:3701\", \"refsource\": \"REDHAT\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. 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      "cveMetadata": "{\"cveId\": \"CVE-2019-3822\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-15T20:52:52.914Z\", \"dateReserved\": \"2019-01-03T00:00:00.000Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2019-02-06T20:00:00.000Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.