CVE-2020-13580
HighAn exploitable heap-based buffer overflow vulnerability exists in the PlanMaker document parsing functionality of SoftMaker Office 2021’s PlanMaker application.
Published Feb 4, 2021 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2020-13580 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Planmaker 2021 (Softmaker), Softmaker Software.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 71% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
71%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
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 attacker to write to memory outside of the buffer and controllably corrupt memory. This can allow an attacker to earn code execution under the context of the application. An attacker can entice the victim to open a document to trigger this vulnerability.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Planmaker 2021Softmaker | 1014 | n/a |
| Softmaker Software | >= GmbH SoftMaker Office PlanMaker 2021 (Revision 1014) | n/a |
Timeline
Publicly disclosed
Feb 4, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-787 Out-of-bounds Write
References
FAQ
Common Questions.
An exploitable heap-based buffer overflow vulnerability exists in the PlanMaker document parsing functionality of SoftMaker Office 2021’s PlanMaker application.
Affected: Planmaker 2021 (Softmaker) versions 1014; Softmaker Software versions >= GmbH SoftMaker Office PlanMaker 2021 (Revision 1014). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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