CVE-2019-25714

Summary

Seeyon OA A8 contains an unauthenticated arbitrary file write vulnerability in the /seeyon/htmlofficeservlet endpoint that allows remote attackers to write arbitrary files to the web application root by sending specially crafted POST requests with custom base64-encoded payloads. Attackers can write JSP webshells to the web root and execute them through the web server to achieve arbitrary OS command execution with web server privileges. Exploitation evidence was first observed by the Shadowserver Foundation on 2021-03-26 (UTC).

Affected Software

VendorProductVersion RangeStatus
Seeyon Internet SoftwareA8-V5 Collaborative Management Software6.1sp1affected
Seeyon Internet SoftwareA8+ Collaborative Management Software7.0affected
Seeyon Internet SoftwareA8+ Collaborative Management Software7.0sp1affected
Seeyon Internet SoftwareA8+ Collaborative Management Software7.0sp2affected
Seeyon Internet SoftwareA8+ Collaborative Management Software7.0sp3affected
Seeyon Internet SoftwareA8+ Collaborative Management Software7.1affected

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: yes
    • Technical Impact: total

References