Vulnerability in Document Foundation Libreoffice
CVE-2019-9853
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.031 · change: -0.002
Affected products
- Document Foundation Libreoffice — versions 6.2 series, 6.3 series
- Libreoffice
Weakness classification (CWE)
References
- www.libreoffice.org/about-us/security/advisories/CVE-2019-9853/ (Vendor Advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00005.html (mailing-list)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.apache.org/thread.html/3a5570ca5cd14ad08e24684c71cfeff3a507f108fe3cf30ba4… (mailing-list)
- lists.apache.org/thread.html/4ae0e6e52600f408d943ded079d314733ce188b04b04471464… (mailing-list)
- lists.apache.org/thread.html/7394e6b5f78a878bd0c44e9bc9adf90b8cdf49e9adc0f28714… (mailing-list)
- lists.apache.org/thread.html/a540d1b6f9a7ebb206adba02839f654a6ee63a7b0976f559a8… (mailing-list)
- lists.apache.org/thread.html/a5231ad45b030b54828c7b0b62a7e7d4b48481c7cb83ff628e… (mailing-list)
- lists.apache.org/thread.html/9dc85d9937ad7f101047c53f78c00e8ceb135eaeff7dcf4724… (mailing-list)
- lists.apache.org/thread.html/70da9481dca267405e1d79e53942264765ef3f55c9a563c373… (mailing-list)
Frequently asked questions
- What is CVE-2019-9853?
- CVE-2019-9853 is a high-severity vulnerability in Document Foundation Libreoffice, classified under Improper Encoding or Escaping of Output. CVSS score: 7.8/10. Published 2019-09-27.
- How severe is CVE-2019-9853?
- High severity. CVSS v3 base score is 7.8 out of 10.