gsd-2019-16779
Vulnerability from gsd
Modified
2019-12-16 00:00
Details
There was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this. Users can workaround the problem by disabling persistent connections, though this may cause performance implications.
Aliases
Aliases
CVE-2019-16779


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-16779",
    "description": "In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this.",
    "id": "GSD-2019-16779",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-16779.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "excon",
            "purl": "pkg:gem/excon"
          }
        }
      ],
      "aliases": [
        "CVE-2019-16779",
        "GHSA-q58g-455p-8vw9"
      ],
      "details": "There was a race condition around persistent connections, where a connection\nwhich is interrupted (such as by a timeout) would leave data on the socket.\nSubsequent requests would then read this data, returning content from the\nprevious response. The race condition window appears to be short, and it\nwould be difficult to purposefully exploit this.\n\nUsers can workaround the problem by disabling persistent connections, though\nthis may cause performance implications.",
      "id": "GSD-2019-16779",
      "modified": "2019-12-16T00:00:00.000Z",
      "published": "2019-12-16T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9"
        },
        {
          "type": "WEB",
          "url": "https://github.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 5.8,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Race condition when using persistent connections"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2019-16779",
        "STATE": "PUBLIC",
        "TITLE": "In RubyGem excon, interrupted Persistent Connections May Leak Response Data"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "excon",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "\u003c 0.71.0",
                          "version_value": "0.71.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "excon"
            }
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "value": "In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-664 Improper Control of a Resource Through its Lifetime"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9",
            "refsource": "CONFIRM",
            "url": "https://github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9"
          },
          {
            "name": "https://github.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29",
            "refsource": "MISC",
            "url": "https://github.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29"
          },
          {
            "name": "openSUSE-SU-2020:0036",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00021.html"
          },
          {
            "name": "[debian-lts-announce] 20200119 [SECURITY] [DLA 2070-1] ruby-excon security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00015.html"
          },
          {
            "name": "openSUSE-SU-2020:0139",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00062.html"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-q58g-455p-8vw9",
        "discovery": "UNKNOWN"
      },
      "work_around": [
        {
          "lang": "eng",
          "value": "Users can workaround the problem by disabling persistent connections, though this may cause performance implications."
        }
      ]
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2019-16779",
      "cvss_v3": 5.8,
      "date": "2019-12-16",
      "description": "There was a race condition around persistent connections, where a connection\nwhich is interrupted (such as by a timeout) would leave data on the socket.\nSubsequent requests would then read this data, returning content from the\nprevious response. The race condition window appears to be short, and it\nwould be difficult to purposefully exploit this.\n\nUsers can workaround the problem by disabling persistent connections, though\nthis may cause performance implications.",
      "gem": "excon",
      "ghsa": "q58g-455p-8vw9",
      "patched_versions": [
        "\u003e= 0.71.0"
      ],
      "related": {
        "url": [
          "https://github.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29"
        ]
      },
      "title": "Race condition when using persistent connections",
      "url": "https://github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c0.71.0",
          "affected_versions": "All versions before 0.71.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-20",
            "CWE-937"
          ],
          "date": "2019-12-30",
          "description": "In RubyGem excon, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this.",
          "fixed_versions": [
            "0.71.0"
          ],
          "identifier": "CVE-2019-16779",
          "identifiers": [
            "CVE-2019-16779",
            "GHSA-q58g-455p-8vw9"
          ],
          "not_impacted": "All versions starting from 0.71.0",
          "package_slug": "gem/excon",
          "pubdate": "2019-12-16",
          "solution": "Upgrade to version 0.71.0 or above.",
          "title": "Improper Input Validation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2019-16779"
          ],
          "uuid": "6bc843fc-c9f0-4e2a-b028-c87b38822d4f"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:excon_project:excon:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.71.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*",
                "cpe_name": [],
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              },
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                "cpe_name": [],
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            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
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        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2019-16779"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "value": "In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this."
            }
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        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-362"
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9",
              "refsource": "CONFIRM",
              "tags": [
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              "url": "https://github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9"
            },
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            },
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
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          "exploitabilityScore": 2.2,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-10-28T13:38Z",
      "publishedDate": "2019-12-16T20:15Z"
    }
  }
}


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