Arbitrary file upload in Sfcyazilim Sonlogger
CVE-2021-27964
SonLogger before 6.4.1 is affected by Unauthenticated Arbitrary File Upload. An attacker can send a POST request to /Config/SaveUploadedHotspotLogoFile without any authentication or session header. There is no check for the file extension or content of the uploaded file.
Vulnerability class: Unrestricted File Upload
EPSS: 0.475 (98.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Sfcyazilim Sonlogger
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-27964?
- CVE-2021-27964 is a critical-severity vulnerability in Sfcyazilim Sonlogger, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-03-05.
- How severe is CVE-2021-27964?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-27964 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.