CVE-2019-9853 (GCVE-0-2019-9853)

Vulnerability from cvelistv5 – Published: 2019-09-27 15:07 – Updated: 2024-09-16 17:17
VLAI
Title
Insufficient URL decoding flaw in categorizing macro location
Summary
LibreOffice documents can contain macros. The execution of those macros is controlled by the document security settings, typically execution of macros are blocked by default. A URL decoding flaw existed in how the urls to the macros within the document were processed and categorized, resulting in the possibility to construct a document where macro execution bypassed the security settings. The documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings allowing arbitrary macro execution This issue affects: LibreOffice 6.2 series versions prior to 6.2.7; LibreOffice 6.3 series versions prior to 6.3.1.
Severity
No CVSS data available.
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
Impacted products
Vendor Product Version
Document Foundation LibreOffice Affected: 6.2 series , < 6.2.7 (custom)
Affected: 6.3 series , < 6.3.1 (custom)
Create a notification for this product.
Date Public
2019-09-27 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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            {
              "name": "[openoffice-commits] 20191124 svn commit: r1870324 - /openoffice/ooo-site/trunk/content/security/cves/CVE-2019-9853.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/70da9481dca267405e1d79e53942264765ef3f55c9a563c3737e3926@%3Ccommits.openoffice.apache.org%3E"
            },
            {
              "name": "[openoffice-commits] 20191124 svn commit: r1870337 - in /openoffice/ooo-site/trunk/content/security/cves: CVE-2019-9853.html CVE-XXXX-YYYY.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/ca216900abd846f0220fe18b95f9f787bdbe0e87fa4eee822073cd69@%3Ccommits.openoffice.apache.org%3E"
            },
            {
              "name": "[openoffice-commits] 20191124 svn commit: r1053270 - in /websites/staging/ooo-site/trunk: cgi-bin/ content/ content/security/cves/CVE-2019-9853.html content/security/cves/CVE-XXXX-YYYY.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/27339e8a9a1e9bb47fbdb939b338256d0356250a1974aaf4d774f683@%3Ccommits.openoffice.apache.org%3E"
            },
            {
              "name": "[openoffice-commits] 20191124 svn commit: r1053271 - in /websites/staging/ooo-site/trunk: cgi-bin/ content/ content/security/cves/CVE-2019-9853.html content/security/cves/CVE-XXXX-YYYY.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/19c917f7c8a0d8f62142046fabfe3e2c7d6091ef1f92b99c6e79e24e@%3Ccommits.openoffice.apache.org%3E"
            },
            {
              "name": "[openoffice-commits] 20191124 svn commit: r1870336 - in /openoffice/ooo-site/trunk/content/security/cves: CVE-2019-9853.html CVE-XXXX-YYYY.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/306a374361891eb17c6cffc99c3d7be1d3152a99c839d4231edc1631@%3Ccommits.openoffice.apache.org%3E"
            },
            {
              "name": "openSUSE-SU-2019:2709",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00040.html"
            },
            {
              "name": "20200220 Open-Xchange Security Advisory 2020-02-19",
              "refsource": "FULLDISC",
              "url": "http://seclists.org/fulldisclosure/2020/Feb/23"
            },
            {
              "name": "http://packetstormsecurity.com/files/156474/Open-Xchange-App-Suite-Documents-Server-Side-Request-Forgery.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/156474/Open-Xchange-App-Suite-Documents-Server-Side-Request-Forgery.html"
            }
          ]
        },
        "source": {
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4fe7d05b-1353-44cc-8b7a-1e416936dff2",
    "assignerShortName": "Document Fdn.",
    "cveId": "CVE-2019-9853",
    "datePublished": "2019-09-27T15:07:40.492Z",
    "dateReserved": "2019-03-17T00:00:00.000Z",
    "dateUpdated": "2024-09-16T17:17:42.379Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2019-9853",
      "date": "2026-05-30",
      "epss": "0.00292",
      "percentile": "0.52828"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-9853\",\"sourceIdentifier\":\"security@documentfoundation.org\",\"published\":\"2019-09-27T16:15:11.013\",\"lastModified\":\"2024-11-21T04:52:26.557\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"LibreOffice documents can contain macros. The execution of those macros is controlled by the document security settings, typically execution of macros are blocked by default. A URL decoding flaw existed in how the urls to the macros within the document were processed and categorized, resulting in the possibility to construct a document where macro execution bypassed the security settings. The documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings allowing arbitrary macro execution This issue affects: LibreOffice 6.2 series versions prior to 6.2.7; LibreOffice 6.3 series versions prior to 6.3.1.\"},{\"lang\":\"es\",\"value\":\"Los documentos de LibreOffice pueden contener macros. La ejecuci\u00f3n de esas macros est\u00e1 controlada por la configuraci\u00f3n de seguridad del documento, por lo general, la ejecuci\u00f3n de las macros est\u00e1 bloqueada por defecto. Exist\u00eda un defecto de decodificaci\u00f3n de URL en c\u00f3mo se procesaban y clasificaban las URL de las macros dentro del documento, resultando en la posibilidad de construir un documento donde la ejecuci\u00f3n de macros omitiera la configuraci\u00f3n de seguridad. Los documentos fueron detectados correctamente como que conten\u00edan macros e incitaron al usuario a su existencia dentro de los documentos, pero las macros dentro del documento no fueron controladas posteriormente por la configuraci\u00f3n de seguridad lo que permit\u00eda la ejecuci\u00f3n arbitraria de macros. Este problema afecta a: LibreOffice serie 6.2 versiones anteriores a 6.2.7 ; LibreOffice serie 6.3 versiones anteriores a 6.3.1.\"}],\"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-116\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.0\",\"versionEndExcluding\":\"6.2.6\",\"matchCriteriaId\":\"B457A16E-A471-45EE-8D1B-BF4427F1E04E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.3.0\",\"versionEndExcluding\":\"6.3.1\",\"matchCriteriaId\":\"3F9A03CA-E4B2-4935-9E97-A5772DC4DE93\"}]}]}],\"references\":[{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00040.html\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"http://packetstormsecurity.com/files/156474/Open-Xchange-App-Suite-Documents-Server-Side-Request-Forgery.html\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"http://seclists.org/fulldisclosure/2020/Feb/23\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/19c917f7c8a0d8f62142046fabfe3e2c7d6091ef1f92b99c6e79e24e%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/27339e8a9a1e9bb47fbdb939b338256d0356250a1974aaf4d774f683%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/306a374361891eb17c6cffc99c3d7be1d3152a99c839d4231edc1631%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/3a5570ca5cd14ad08e24684c71cfeff3a507f108fe3cf30ba4f58226%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/4ae0e6e52600f408d943ded079d314733ce188b04b04471464f89c4f%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/70da9481dca267405e1d79e53942264765ef3f55c9a563c3737e3926%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/7394e6b5f78a878bd0c44e9bc9adf90b8cdf49e9adc0f287145aba9b%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/9dc85d9937ad7f101047c53f78c00e8ceb135eaeff7dcf4724b46f2c%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/a5231ad45b030b54828c7b0b62a7e7d4b48481c7cb83ff628e07fa43%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/a540d1b6f9a7ebb206adba02839f654a6ee63a7b0976f559a847e49a%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.apache.org/thread.html/ca216900abd846f0220fe18b95f9f787bdbe0e87fa4eee822073cd69%40%3Ccommits.openoffice.apache.org%3E\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQGBRSD73KTDZ2MPAOL7FBWO3SQVYE5B/\",\"source\":\"security@documentfoundation.org\"},{\"url\":\"https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9853/\",\"source\":\"security@documentfoundation.org\",\"tags\":[\"Vendor 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Advisory\"]}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.