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CVE-2015-8557

Estado: ModificadaCrítica (9)—

La función FontManager._get_nix_font_path en formatters/img.py en Pygments 1.2.2 hasta la versión 2.0.2 permite a atacantes remotos ejecutar comandos arbitrarios a través de metacaracteres de shell en un nombre de fuente.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Canonical — Ubuntu LinuxPygments — Pygments

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2015-8557",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false
      }
    ],
    "cvssMetricV30": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-01-08T20:59:02.233",
  "references": [
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      "url": "http://packetstormsecurity.com/files/133823/Pygments-FontManager._get_nix_font_path-Shell-Injection.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2015/Oct/4",
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      "url": "http://www.openwall.com/lists/oss-security/2015/12/14/17",
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      "url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2862-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bitbucket.org/birkenfeld/pygments-main/pull-requests/501/fix-shell-injection-in/diff",
      "tags": [
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      "source": "cve@mitre.org"
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    {
      "url": "https://security.gentoo.org/glsa/201612-05",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/133823/Pygments-FontManager._get_nix_font_path-Shell-Injection.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2015/Oct/4",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "http://www.debian.org/security/2016/dsa-3445",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bitbucket.org/birkenfeld/pygments-main/pull-requests/501/fix-shell-injection-in/diff",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://security.gentoo.org/glsa/201612-05",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The FontManager._get_nix_font_path function in formatters/img.py in Pygments 1.2.2 through 2.0.2 allows remote attackers to execute arbitrary commands via shell metacharacters in a font name."
    },
    {
      "lang": "es",
      "value": "La función FontManager._get_nix_font_path en formatters/img.py en Pygments 1.2.2 hasta la versión 2.0.2 permite a atacantes remotos ejecutar comandos arbitrarios a través de metacaracteres de shell en un nombre de fuente."
    }
  ],
  "lastModified": "2026-06-17T00:34:46.240",
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