THREATPORT/VULNERABILITY/CVE-2017-15580
CRITICAL SEVERITY

CVE-2017-15580

Osticket vulnerability

CVSS
9.8
EPSS
16.0%
EPSS pct
97th
Exploited
No known
osTicket 1.10.1 provides a functionality to upload 'html' files with associated formats. However, it does not properly validate the uploaded file's contents and thus accepts any type of file, such as with a tickets.php request that is modified with a .html extension changed to a .exe extension. An attacker can leverage this vulnerability to upload arbitrary files on the web application having malicious content.
Affected vendor
Osticket
Affected product
Osticket
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-434 — Unrestricted Upload of File with Dangerous Type
Published
2017-10-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 16.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2017-15580

  • Confirm whether Osticket Osticket is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-15580.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-15580

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-15580 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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