gsd-2020-9484
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.
Aliases
Aliases
CVE-2020-9484


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-9484",
    "description": "When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.",
    "id": "GSD-2020-9484",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-9484.html",
      "https://www.debian.org/security/2020/dsa-4727",
      "https://access.redhat.com/errata/RHSA-2021:3140",
      "https://access.redhat.com/errata/RHSA-2020:3017",
      "https://access.redhat.com/errata/RHSA-2020:2530",
      "https://access.redhat.com/errata/RHSA-2020:2529",
      "https://access.redhat.com/errata/RHSA-2020:2509",
      "https://access.redhat.com/errata/RHSA-2020:2506",
      "https://access.redhat.com/errata/RHSA-2020:2487",
      "https://access.redhat.com/errata/RHSA-2020:2483",
      "https://ubuntu.com/security/CVE-2020-9484",
      "https://advisories.mageia.org/CVE-2020-9484.html",
      "https://security.archlinux.org/CVE-2020-9484",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-9484.html",
      "https://linux.oracle.com/cve/CVE-2020-9484.html",
      "https://packetstormsecurity.com/files/cve/CVE-2020-9484",
      "https://access.redhat.com/errata/RHSA-2022:5532"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-9484"
      ],
      "details": "When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.",
      "id": "GSD-2020-9484",
      "modified": "2023-12-13T01:21:52.829804Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
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                    "version": {
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          }
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      },
      "problemtype": {
        "problemtype_data": [
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    "gitlab.com": {
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        {
          "affected_range": "[7.0.0,7.0.103],[8.5.0,8.5.54],[9.0.0,9.0.34],[10.0.0-M1,10.0.0-M4]",
          "affected_versions": "All versions starting from 7.0.0 up to 7.0.103, all versions starting from 8.5.0 up to 8.5.54, all versions starting from 9.0.0 up to 9.0.34, all versions starting from 10.0.0-M1 up to 10.0.0-M4",
          "cvss_v2": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
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            "CWE-502",
            "CWE-937"
          ],
          "date": "2021-12-02",
          "description": "When using Apache Tomcat, an attacker is able to control the contents and name of a file on the server.",
          "fixed_versions": [
            "7.0.104",
            "8.5.55",
            "9.0.35",
            "10.0.0-M5"
          ],
          "identifier": "CVE-2020-9484",
          "identifiers": [
            "CVE-2020-9484"
          ],
          "not_impacted": "All versions before 7.0.0, all versions after 7.0.103 before 8.5.0, all versions after 8.5.54 before 9.0.0, all versions after 9.0.34 before 10.0.0, all versions after 10.0.0-M4",
          "package_slug": "maven/org.apache.tomcat.embed/tomcat-embed-core",
          "pubdate": "2020-05-20",
          "solution": "Upgrade to versions 7.0.104, 8.5.55, 9.0.35, 10.0.0-M4 or above.",
          "title": "Deserialization of Untrusted Data",
          "urls": [
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          "uuid": "7c092285-dc9f-4c2e-8192-92ab54f2489e"
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        {
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          "affected_versions": "All versions starting from 7.0.0 up to 7.0.103, all versions starting from 8.5.0 up to 8.5.54, all versions starting from 9.0.0 up to 9.0.34, version 10.0.0",
          "cvss_v2": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
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            "CWE-502",
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          "date": "2020-10-27",
          "description": "When using Apache Tomcat to M1 to to to if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the `PersistenceManager` with a `FileStore`; and c) the `PersistenceManager` is configured with `sessionAttributeValueClassNameFilter=\"null\"` (the default unless a `SecurityManager` is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by `FileStore` to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.",
          "fixed_versions": [
            "7.0.104",
            "8.5.55",
            "9.0.35"
          ],
          "identifier": "CVE-2020-9484",
          "identifiers": [
            "CVE-2020-9484"
          ],
          "not_impacted": "All versions before 7.0.0, all versions after 7.0.103 before 8.5.0, all versions after 8.5.54 before 9.0.0, all versions after 9.0.34 before 10.0.0, all versions after 10.0.0",
          "package_slug": "maven/org.apache.tomcat/tomcat-catalina",
          "pubdate": "2020-05-20",
          "solution": "Upgrade to versions 7.0.104, 8.5.55, 9.0.35 or above.",
          "title": "Deserialization of Untrusted Data",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-9484",
            "http://packetstormsecurity.com/files/157924/Apache-Tomcat-CVE-2020-9484-Proof-Of-Concept.html"
          ],
          "uuid": "7fd2b075-2fa3-4e4f-b489-76492a9a5186"
        }
      ]
    },
    "nvd.nist.gov": {
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        "nodes": [
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.4,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.0,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-07-25T18:15Z",
      "publishedDate": "2020-05-20T19:15Z"
    }
  }
}


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