Vulnerability Description
madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Miniblog Project | Miniblog | <= 2018-05-18 |
Related Weaknesses (CWE)
References
- https://github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e01874Third Party Advisory
- https://rastating.github.io/miniblog-remote-code-execution/ExploitThird Party Advisory
- https://github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e01874Third Party Advisory
- https://rastating.github.io/miniblog-remote-code-execution/ExploitThird Party Advisory
FAQ
What is CVE-2019-9842?
CVE-2019-9842 is a vulnerability with a CVSS score of 7.2 (HIGH). madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs write...
How severe is CVE-2019-9842?
CVE-2019-9842 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-9842?
Check the references section above for vendor advisories and patch information. Affected products include: Miniblog Project Miniblog.