CVE-2019-20044 (GCVE-0-2019-20044)

Vulnerability from cvelistv5 – Published: 2020-02-24 13:09 – Updated: 2024-08-05 02:32
VLAI
Summary
In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2340 records in the last 180 days details
References
Show details on NVD website
To clipboard 

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                "negate": false,
                "operator": "OR"
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            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid()."
          },
          {
            "lang": "es",
            "value": "En Zsh versiones anteriores a 5.8, los atacantes capaces de ejecutar comandos pueden recuperar privilegios eliminados mediante la opci\u00f3n --no-PRIVILEGED. Zsh presenta un fallo al sobrescribir el uid guardado, ya que los privilegios originales pueden ser restaurados mediante una ejecuci\u00f3n de zmodload de MODULE_PATH=/dir/with/module con un m\u00f3dulo que llama a la funci\u00f3n setuid()."
          }
        ],
        "id": "CVE-2019-20044",
        "lastModified": "2024-11-21T04:37:56.997",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 7.2,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
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                "attackComplexity": "LOW",
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                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
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              "exploitabilityScore": 1.8,
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              "source": "nvd@nist.gov",
              "type": "Primary"
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        },
        "published": "2020-02-24T14:15:11.667",
        "references": [
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            "url": "https://www.zsh.org/mla/zsh-announce/141"
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        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-273"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T16:53:24+00:00",
      "cve": "CVE-2019-20044",
      "id": "CVE-2019-20044",
      "initial_release_date": "2019-01-01T00:00:00+00:00",
      "product_status:fixed": "252",
      "product_status:known_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "zsh: insecure dropping of privileges when unsetting PRIVILEGED option",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-20044.json",
      "version": "3"
    }
  }
}



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