6.8
CVSSv2

CVE-2020-13580

Published: 04/02/2021 Updated: 09/02/2021
CVSS v2 Base Score: 6.8 | Impact Score: 6.4 | Exploitability Score: 8.6
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Summary

An exploitable heap-based buffer overflow vulnerability exists in the PlanMaker document parsing functionality of SoftMaker Office 2021’s PlanMaker application. A specially crafted document can cause the document parser to explicitly trust a length from a particular record type and use it to write a 16-bit null relative to a buffer allocated on the stack. Due to a lack of bounds-checking on this value, this can allow an malicious user to write to memory outside of the buffer and controllably corrupt memory. This can allow an malicious user to earn code execution under the context of the application. An attacker can entice the victim to open a document to trigger this vulnerability.

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