gsd-2021-28363
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.
Aliases
Aliases
CVE-2021-28363


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-28363",
    "description": "The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn\u0027t given via proxy_config) doesn\u0027t verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.",
    "id": "GSD-2021-28363",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-28363.html",
      "https://access.redhat.com/errata/RHBA-2021:1147",
      "https://advisories.mageia.org/CVE-2021-28363.html",
      "https://security.archlinux.org/CVE-2021-28363"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-28363"
      ],
      "details": "The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn\u0027t given via proxy_config) doesn\u0027t verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.",
      "id": "GSD-2021-28363",
      "modified": "2023-12-13T01:23:29.264018Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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                    "version": {
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          }
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            "url": "https://github.com/urllib3/urllib3/commits/main"
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          },
          {
            "name": "GLSA-202107-36",
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            "url": "https://security.gentoo.org/glsa/202107-36"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
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            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
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            "url": "https://security.gentoo.org/glsa/202305-02"
          }
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    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=1.26.0,\u003c1.26.4",
          "affected_versions": "All versions starting from 1.26.0 before 1.26.4",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-295",
            "CWE-937"
          ],
          "date": "2023-05-03",
          "description": "The urllib3 library for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn\u0027t given via proxy_config) does not verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.",
          "fixed_versions": [
            "1.26.4"
          ],
          "identifier": "CVE-2021-28363",
          "identifiers": [
            "CVE-2021-28363",
            "GHSA-5phf-pp7p-vc2r"
          ],
          "not_impacted": "All versions before 1.26.0, all versions starting from 1.26.4",
          "package_slug": "pypi/urllib3",
          "pubdate": "2021-03-15",
          "solution": "Upgrade to version 1.26.4 or above.",
          "title": "Improper Certificate Validation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-28363"
          ],
          "uuid": "7837dcb0-fa2b-4328-bef2-e3d5ec874b9f"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
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                "versionEndExcluding": "1.26.4",
                "versionStartIncluding": "1.26.0",
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              }
            ],
            "operator": "OR"
          },
          {
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            "cpe_match": [
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          },
          {
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            "cpe_match": [
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      },
      "cve": {
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            },
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              "url": "https://security.gentoo.org/glsa/202305-02"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 6.4,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2023-05-03T11:15Z",
      "publishedDate": "2021-03-15T18:15Z"
    }
  }
}


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