CVE-2019-9852 (GCVE-0-2019-9852)

Vulnerability from cvelistv5 – Published: 2019-08-15 21:40 – Updated: 2024-09-17 03:42
VLAI
Title
Insufficient URL encoding flaw in allowed script location check
Summary
LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
URL Tags
https://www.libreoffice.org/about-us/security/adv… x_refsource_MISC
https://seclists.org/bugtraq/2019/Aug/28 mailing-listx_refsource_BUGTRAQ
https://www.debian.org/security/2019/dsa-4501 vendor-advisoryx_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://usn.ubuntu.com/4102-1/ vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://seclists.org/bugtraq/2019/Sep/17 mailing-listx_refsource_BUGTRAQ
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
Impacted products
Vendor Product Version
Document Foundation LibreOffice Affected: unspecified , < 6.2.6 (custom)
Create a notification for this product.
Date Public
2019-08-15 00:00
Credits
Thanks to Nils Emmerich of ERNW Research GmbH for discovering and reporting this issue
Show details on NVD website
To clipboard 

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This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.\"},{\"lang\":\"es\",\"value\":\"LibreOffice est\u00e1 com\u00fanmente incorporada con LibreLogo, un script de gr\u00e1ficos espec\u00edficos turtle programables, lo que puede ejecutar comandos arbitrarios de python contenidos con el documento desde que se inicia. Se agreg\u00f3 protecci\u00f3n, para abordar el CVE-2019-9848, para bloquear las llamadas a LibreLogo desde los manejadores de script de eventos de documentos, p. ej. mouse over. Sin embargo, LibreOffice tambi\u00e9n presenta una funcionalidad separada en la que los documentos pueden especificar que los scripts preinstalados pueden ser ejecutados en varios eventos de script globales, tales como document-open, etc. Este problema afecta: Document Foundation LibreOffice versiones anteriores a 6.2.6\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"security@documentfoundation.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-116\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-22\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CD783B0C-9246-47D9-A937-6144FE8BFF0F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D100F7CE-FC64-4CC6-852A-6136D72DA419\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F1E78106-58E6-4D59-990F-75DA575BFAD9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B620311B-34A3-48A6-82DF-6F078D7A4493\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.2.6\",\"matchCriteriaId\":\"32F74064-7FE4-4BB6-86BB-83AE52D38E87\"}]}]}],\"references\":[{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html\",\"source\":\"security@documentfoundation.org\",\"tags\":[\"Mailing 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Advisory\"]},{\"url\":\"https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T16:51:04+00:00",
      "cve": "CVE-2019-9852",
      "id": "CVE-2019-9852",
      "initial_release_date": "2019-08-15T00:00:00+00:00",
      "product_status:fixed": "1530",
      "product_status:known_affected": "133",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libreoffice: Insufficient URL encoding flaw in allowed script location check",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9852.json",
      "version": "3"
    }
  }
}