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.

CVSS v3.0

7.2 HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS

2.20% chance of exploitation in the next 30 days, 81th percentile

Published

2019-06-14

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://rastating.github.io/miniblog-remote-code-execution/

References

• CVE Record
• NVD entry

Related

• CVE-2019-9841
• CVE-2019-9844
• CVE-2019-9839
• CVE-2019-9845
• CVE-2019-9838
• CVE-2019-9848