Vulnerability · Published Feb 8, 2022 · Assigned by GitHub_M

CVE-2022-23626Insufficient file checks in m1k1o/blog

High 8.5

In plain English

A high-severity improper input validation in blog from m1k1o. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 9.9% (higher than 96% of all known vulnerabilities).

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)9.9%top 4.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

m1k1o/blog is a lightweight self-hosted facebook-styled PHP blog. Errors from functions `imagecreatefrom*` and `image*` have not been checked properly. Although PHP issued warnings and the upload function returned `false`, the original file (that could contain a malicious payload) was kept on the disk. Users are advised to upgrade as soon as possible. There are no known workarounds for this issue.

Affected products (as reported)

Vendor	Product	Versions
m1k1o	blog	< 1.4

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/m1k1o/blog/security/advisories/GHSA-wmqj-5v54-24x4 x_refsource_CONFIRM
https://github.com/m1k1o/blog/commit/6f5e59f1401c4a3cf2e518aa85b231ea14e8a2ef x_refsource_MISC
http://packetstormsecurity.com/files/167235/m1k1os-Blog-1.3-Remote-Code-Execution.html x_refsource_MISC