gsd-2020-13777
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.
Aliases
Aliases
CVE-2020-13777


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-13777",
    "description": "GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.",
    "id": "GSD-2020-13777",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-13777.html",
      "https://www.debian.org/security/2020/dsa-4697",
      "https://access.redhat.com/errata/RHSA-2020:2639",
      "https://access.redhat.com/errata/RHSA-2020:2638",
      "https://access.redhat.com/errata/RHSA-2020:2637",
      "https://ubuntu.com/security/CVE-2020-13777",
      "https://advisories.mageia.org/CVE-2020-13777.html",
      "https://security.archlinux.org/CVE-2020-13777",
      "https://linux.oracle.com/cve/CVE-2020-13777.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-13777"
      ],
      "details": "GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.",
      "id": "GSD-2020-13777",
      "modified": "2023-12-13T01:21:47.404020Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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                          "version_value": "n/a"
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          }
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      },
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    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
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                "versionEndExcluding": "3.6.14",
                "versionStartIncluding": "3.6.0",
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          },
          {
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            "cpe_match": [
              {
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              },
              {
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            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
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        "problemtype": {
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        },
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              "name": "https://gnutls.org/security-new.html#GNUTLS-SA-2020-06-03",
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2023-03-01T16:48Z",
      "publishedDate": "2020-06-04T07:15Z"
    }
  }
}


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