vulnwire
9.8crit

CVE-2016-20052

Snews CMS 1.7 Unrestricted File Upload via snews_files

Published 7 mo ago · modified 3 mo ago · JSON

CVSS
9.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
1.0%
percentile 62%
Public exploits
0
none known

Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by accessing the uploaded file path to achieve remote code execution.

CISA SSVC assessment

Exploitation
Proof of concept public
Automatable
yes
Technical impact
total
Assessed
7 mo ago

Exploit prediction (EPSS)

0.97% probability of exploitation in the next 30 days, higher than 62% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA4.09.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA4.09.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Snewscms Snews CMS upload sheller

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

  • exploit-db.com /exploits/40706 · exploit
  • vulncheck.com /advisories/snews-cms-unrestricted-file-upload-via-snews-files · third-party-advisory

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.