Buffer overflow in Apache Openoffice
CVE-2021-33035
Apache OpenOffice opens dBase/DBF documents and shows the contents as spreadsheets. DBF are database files with data organized in fields. When reading DBF data the size of certain fields is not checked: the data is just copied into local variables. A carefully crafted document could overflow the allocated space, leading to the execution of arbitrary code by altering the contents of the program stack. This issue affects Apache OpenOffice up to and including version 4.1.10
Vulnerability class: Buffer Overflow
EPSS: 0.506 (98.8th percentile) — read the EPSS interpretation.
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.
Affected products
- Apache Openoffice
- Apache Software Foundation Openoffice — versions Apache OpenOffice, OpenOffice.org
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33035?
- CVE-2021-33035 is a high-severity vulnerability in Apache Openoffice, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2021-09-23.
- How severe is CVE-2021-33035?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-33035 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.