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CVE-2019-9675

Status: ModifiedHigh (8.1)—

An issue was discovered in PHP 7.x before 7.1.27 and 7.3.x before 7.3.3. phar_tar_writeheaders_int in ext/phar/tar.c has a buffer overflow via a long link value. NOTE: The vendor indicates that the link value is used only when an archive contains a symlink, which currently cannot happen: "This issue allows theoretical compromise of security, but a practical attack is usually impossible.

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 (3)

Canonical — Ubuntu LinuxOpensuse — LeapPHP — PHP

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2019-9675",
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      "tags": [
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        "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"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 2.2
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  "affected": [
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  "published": "2019-03-11T11:29:12.080",
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      "value": "An issue was discovered in PHP 7.x before 7.1.27 and 7.3.x before 7.3.3. phar_tar_writeheaders_int in ext/phar/tar.c has a buffer overflow via a long link value. NOTE: The vendor indicates that the link value is used only when an archive contains a symlink, which currently cannot happen: \"This issue allows theoretical compromise of security, but a practical attack is usually impossible."
    },
    {
      "lang": "es",
      "value": "** EN DISPUTA ** Se ha detectado un fallo en PHP, en las versiones 7.x anteriores a la 7.1.27 y en las 7.3.x anteriores a la 7.3.3. phar_tar_writeheaders_int tiene un desbordamiento de búfer mediante un valor de enlace largo. NOTA: el fabricante indica que el valor de enlace se utiliza solamente cuando un archivo contiene un symlink, algo que actualmente no puede ocurrir: \"Este fallo facilita el compromiso teórico de la seguridad. Sin embargo, un ataque práctico es normalmente imposible.\""
    }
  ],
  "lastModified": "2026-06-17T02:44:09.797",
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