MSRC_CVE-2018-16866

Vulnerability from csaf_microsoft - Published: 2019-01-02 00:00 - Updated: 2020-08-18 00:00
Summary
An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable.

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/"
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    "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-2018-16866 An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon \u0027:\u0027. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2018-16866.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
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      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon \u0027:\u0027. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable.",
    "tracking": {
      "current_release_date": "2020-08-18T00:00:00.000Z",
      "generator": {
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-16866",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "general",
          "text": "redhat",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
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        "known_affected": [
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      "references": [
        {
          "category": "self",
          "summary": "CVE-2018-16866 An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon \u0027:\u0027. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2018-16866.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-08-18T00:00:00.000Z",
          "details": "-:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
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            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 3.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "16820-1"
          ]
        }
      ],
      "title": "An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon \u0027:\u0027. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable."
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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