CVE-2018-10120: canonical ubuntu_linux Improper Validation of Array Index
Vulnerability summary
CVE-2018-10120 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in canonical ubuntu_linux. EPSS estimates a 2.06% chance of exploitation in the next 30 days, higher than 81% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 3Timeline
- 15-04-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The SwCTBWrapper::Read function in sw/source/filter/ww8/ww8toolbar.cxx in LibreOffice before 5.4.6.1 and 6.x before 6.0.2.1 does not validate a customizations index, which allows remote attackers to cause a denial of service (heap-based buffer overflow with write access) or possibly have unspecified other impact via a crafted document that contains a certain Microsoft Word record.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.06%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
-0.04 pp
From 2.10% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-129Improper Validation of Array IndexThe product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Redhat3 products
Debian2 products
- libreoffice< 1:6.0.2-1
- debian_linuxEOL7.0 | 8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04
Libreoffice1 product
- libreoffice< 5.4.6.1 | ≥ 6.0.0, < 6.0.2.1
Ubuntu1 product
- libreoffice< 1:4.2.8-0ubuntu5.5 | < 1:5.1.6~rc2-0ubuntu1~xenial6
5 vendors · 8 products
References
14 links
- lists.debian.org/debian-lts-announce/2018/04/msg00021.htmlMailing ListX Refsource MLISTThird Party Advisory
- www.libreoffice.org/about-us/security/advisories/cve-2018-10120/X Refsource MISCVendor AdvisoryREPORT