msrc_cve-2018-20969
Vulnerability from csaf_microsoft
Published
2019-08-02 00:00
Modified
2024-06-30 07:00
Summary
do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638 but the ! syntax is specific to ed and is unrelated to a shell metacharacter.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.


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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2018-20969 do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638 but the ! syntax is specific to ed and is unrelated to a shell metacharacter. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2018-20969.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638 but the ! syntax is specific to ed and is unrelated to a shell metacharacter.",
    "tracking": {
      "current_release_date": "2024-06-30T07:00:00.000Z",
      "generator": {
        "date": "2025-10-19T17:44:44.459Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2018-20969",
      "initial_release_date": "2019-08-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2020-08-18T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2021-12-16T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added patch to CBL-Mariner 2.0"
        },
        {
          "date": "2024-06-30T07:00:00.000Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              },
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
                }
              },
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              },
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "16817"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cazl3 patch 2.7.6-9",
                "product": {
                  "name": "\u003cazl3 patch 2.7.6-9",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 patch 2.7.6-9",
                "product": {
                  "name": "azl3 patch 2.7.6-9",
                  "product_id": "16927"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccm1 patch 2.7.6-7",
                "product": {
                  "name": "\u003ccm1 patch 2.7.6-7",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 patch 2.7.6-7",
                "product": {
                  "name": "cm1 patch 2.7.6-7",
                  "product_id": "16925"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 patch 2.7.6-7",
                "product": {
                  "name": "\u003ccbl2 patch 2.7.6-7",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 patch 2.7.6-7",
                "product": {
                  "name": "cbl2 patch 2.7.6-7",
                  "product_id": "16926"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 patch 2.7.6-9",
                "product": {
                  "name": "\u003cazl3 patch 2.7.6-9",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 patch 2.7.6-9",
                "product": {
                  "name": "azl3 patch 2.7.6-9",
                  "product_id": "16927"
                }
              }
            ],
            "category": "product_name",
            "name": "patch"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 patch 2.7.6-9 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 patch 2.7.6-9 as a component of Azure Linux 3.0",
          "product_id": "16927-17084"
        },
        "product_reference": "16927",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 patch 2.7.6-7 as a component of CBL Mariner 1.0",
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        },
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      },
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        },
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        "relates_to_product_reference": "16820"
      },
      {
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        },
        "product_reference": "3",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 patch 2.7.6-7 as a component of CBL Mariner 2.0",
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        },
        "product_reference": "16926",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 patch 2.7.6-9 as a component of Azure Linux 3.0",
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        "relates_to_product_reference": "16817"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 patch 2.7.6-9 as a component of Azure Linux 3.0",
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        },
        "product_reference": "16927",
        "relates_to_product_reference": "16817"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-20969",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "16927-17084",
          "16925-16820",
          "16926-17086",
          "16927-16817"
        ],
        "known_affected": [
          "17084-1",
          "16820-4",
          "17086-3",
          "16817-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2018-20969 do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638 but the ! syntax is specific to ed and is unrelated to a shell metacharacter. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2018-20969.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-08-18T00:00:00.000Z",
          "details": "2.7.6-9:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-1",
            "16817-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2020-08-18T00:00:00.000Z",
          "details": "2.7.6-7:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-4",
            "17086-3"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.8,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "17084-1",
            "16820-4",
            "17086-3",
            "16817-2"
          ]
        }
      ],
      "title": "do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638 but the ! syntax is specific to ed and is unrelated to a shell metacharacter."
    }
  ]
}


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