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CVE-2018-16802

Status: ModifiedHigh (7.8)—

An issue was discovered in Artifex Ghostscript before 9.25. Incorrect "restoration of privilege" checking when running out of stack during exception handling could be used by attackers able to supply crafted PostScript to execute code using the "pipe" instruction. This is due to an incomplete fix for CVE-2018-16509.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (9)

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-16802",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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          "version": "3.0",
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
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  "affected": [
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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  "published": "2018-09-10T16:29:00.950",
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  "weaknesses": [
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      "description": [
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          "value": "NVD-CWE-noinfo"
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  "descriptions": [
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      "lang": "en",
      "value": "An issue was discovered in Artifex Ghostscript before 9.25. Incorrect \"restoration of privilege\" checking when running out of stack during exception handling could be used by attackers able to supply crafted PostScript to execute code using the \"pipe\" instruction. This is due to an incomplete fix for CVE-2018-16509."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en versiones anteriores a la 9.25 de Artifex Ghostscript. La comprobación incorrecta de \"restoration of privilege\" al quedarse sin pila durante el manejo de excepciones podría ser empleada por atacantes que sean capaces de proporcionar PostScript manipulado para ejecutar código mediante la instrucción \"pipe\". Esta vulnerabilidad existe debido a una solución incompleta para CVE-2018-16509"
    }
  ],
  "lastModified": "2026-06-17T01:44:50.467",
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}