fkie_cve-2023-27830
Vulnerability from fkie_nvd
Published
2023-04-12 15:15
Modified
2025-02-08 03:15
Severity ?
9.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
9.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Summary
TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact that TightVNC runs in the backend as a high-privileges account.
References
cve@mitre.orghttps://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cceExploit, Third Party Advisory
cve@mitre.orghttps://www.tightvnc.com/news.phpProduct, Release Notes
cve@mitre.orghttps://www.tightvnc.com/whatsnew.phpProduct, Release Notes
af854a3a-2127-422b-91ae-364da2661108https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cceExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.tightvnc.com/news.phpProduct, Release Notes
af854a3a-2127-422b-91ae-364da2661108https://www.tightvnc.com/whatsnew.phpProduct, Release Notes
Impacted products
Vendor Product Version
tightvnc tightvnc *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:tightvnc:tightvnc:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "521FB7FE-6DDF-44F9-BDFD-0785D8E0093F",
                     versionEndExcluding: "2.8.75",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact that TightVNC runs in the backend as a high-privileges account.",
      },
   ],
   id: "CVE-2023-27830",
   lastModified: "2025-02-08T03:15:10.200",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "HIGH",
               baseScore: 9,
               baseSeverity: "CRITICAL",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "LOW",
               scope: "CHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 2.3,
            impactScore: 6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "HIGH",
               baseScore: 9,
               baseSeverity: "CRITICAL",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "LOW",
               scope: "CHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 2.3,
            impactScore: 6,
            source: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            type: "Secondary",
         },
      ],
   },
   published: "2023-04-12T15:15:12.830",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Product",
            "Release Notes",
         ],
         url: "https://www.tightvnc.com/news.php",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Product",
            "Release Notes",
         ],
         url: "https://www.tightvnc.com/whatsnew.php",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Product",
            "Release Notes",
         ],
         url: "https://www.tightvnc.com/news.php",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Product",
            "Release Notes",
         ],
         url: "https://www.tightvnc.com/whatsnew.php",
      },
   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-269",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
      {
         description: [
            {
               lang: "en",
               value: "CWE-269",
            },
         ],
         source: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
         type: "Secondary",
      },
   ],
}


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