gsd-2018-16890
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.
Aliases
Aliases
CVE-2018-16890


To clipboard 

{
   GSD: {
      alias: "CVE-2018-16890",
      description: "libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.",
      id: "GSD-2018-16890",
      references: [
         "https://www.suse.com/security/cve/CVE-2018-16890.html",
         "https://www.debian.org/security/2019/dsa-4386",
         "https://access.redhat.com/errata/RHSA-2019:3701",
         "https://access.redhat.com/errata/RHSA-2019:1543",
         "https://ubuntu.com/security/CVE-2018-16890",
         "https://security.archlinux.org/CVE-2018-16890",
         "https://linux.oracle.com/cve/CVE-2018-16890.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
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            "CVE-2018-16890",
         ],
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         id: "GSD-2018-16890",
         modified: "2023-12-13T01:22:26.190671Z",
         schema_version: "1.4.0",
      },
   },
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         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "LOW",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "PARTIAL",
                  baseScore: 5,
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:P",
                  version: "2.0",
               },
               exploitabilityScore: 10,
               impactScore: 2.9,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "MEDIUM",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 7.5,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 3.9,
               impactScore: 3.6,
            },
         },
         lastModifiedDate: "2020-09-18T16:33Z",
         publishedDate: "2019-02-06T20:29Z",
      },
   },
}


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