GSD-2020-28024

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.
Aliases
Aliases
CVE-2020-28024
To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-28024",
    "description": "Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.",
    "id": "GSD-2020-28024",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-28024.html",
      "https://www.debian.org/security/2021/dsa-4912",
      "https://ubuntu.com/security/CVE-2020-28024",
      "https://security.archlinux.org/CVE-2020-28024",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-28024.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-28024"
      ],
      "details": "Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.",
      "id": "GSD-2020-28024",
      "modified": "2023-12-13T01:22:01.802653Z",
      "schema_version": "1.4.0"
    }
  },
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        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-28024",
        "STATE": "PUBLIC"
      },
      "affects": {
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      "data_version": "4.0",
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          }
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                "value": "n/a"
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt",
            "refsource": "MISC",
            "url": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt"
          }
        ]
      }
    },
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                "cpe_name": [],
                "versionEndExcluding": "4.94.2",
                "versionStartIncluding": "4.00",
                "vulnerable": true
              }
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        ]
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              "value": "Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF."
            }
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        "references": {
          "reference_data": [
            {
              "name": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt",
              "refsource": "MISC",
              "tags": [
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              "url": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt"
            }
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-05-10T16:17Z",
      "publishedDate": "2021-05-06T13:15Z"
    }
  }
}



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