CVE-2020-8856: Foxit PhantomPDF AcroForm addWatermarkFromText Use-After-Free Remote Code Execution Vulnerability
First published: Fri Feb 14 2020(Updated: )
This vulnerability allows remote atackers to execute arbitrary code on affected installations of Foxit PhantomPDF 9.6.0.25608. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of watermarks. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-9640.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Foxit PhantomPDF | ||
| Foxitsoftware Reader | <=9.7.0.29478 | |
| Microsoft Windows | ||
| Foxitsoftware Phantompdf | <=9.7.0.29455 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-8856?
The severity of CVE-2020-8856 is high.
How does CVE-2020-8856 allow remote attackers to execute arbitrary code?
CVE-2020-8856 allows remote attackers to execute arbitrary code by exploiting a use-after-free vulnerability in Foxit PhantomPDF.
Which versions of Foxit PhantomPDF are affected by CVE-2020-8856?
Foxit PhantomPDF versions up to and including 9.7.0.29455 are affected by CVE-2020-8856.
Is Microsoft Windows vulnerable to CVE-2020-8856?
No, Microsoft Windows is not vulnerable to CVE-2020-8856.
Where can I find more information about CVE-2020-8856?
More information about CVE-2020-8856 can be found in the Foxit Software security bulletins and the Zero Day Initiative advisory.
- collector/zdi-advisory
- alias/ZDI-20-212
- alias/ZDI-CAN-9640
- alias/CVE-2020-8856
- agent/title
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/event
- agent/tags
- agent/type
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/foxit
- canonical/foxit phantompdf
- vendor/foxitsoftware
- canonical/foxitsoftware reader
- version/foxitsoftware reader/9.7.0.29478
- vendor/microsoft
- canonical/microsoft windows
- canonical/foxitsoftware phantompdf
- version/foxitsoftware phantompdf/9.7.0.29455