Arbitrary file upload in Miniblog Project
CVE-2019-9842
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: -0.000
Affected products
Weakness classification (CWE)
References
- github.com/madskristensen/MiniBlog/blob/1a7ae45ddba484e2c8f808e288e018748c9ddb5… (Third Party Advisory)
- rastating.github.io/miniblog-remote-code-execution/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-9842?
- CVE-2019-9842 is a high-severity vulnerability in Miniblog Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2019-06-14.
- How severe is CVE-2019-9842?
- High severity. CVSS v3 base score is 7.2 out of 10.