THREATPORT/VULNERABILITY/CVE-2014-4172
CRITICAL SEVERITY

CVE-2014-4172

.Net Cas Client vulnerability

CVSS
9.8
EPSS
6.1%
EPSS pct
93th
Exploited
No known
A URL parameter injection vulnerability was found in the back-channel ticket validation step of the CAS protocol in Jasig Java CAS Client before 3.3.2, .NET CAS Client before 1.0.2, and phpCAS before 1.3.3 that allow remote attackers to inject arbitrary web script or HTML via the (1) service parameter to validation/AbstractUrlBasedTicketValidator.java or (2) pgtUrl parameter to validation/Cas20ServiceTicketValidator.java.
Affected vendor
Apereo
Affected product
.Net Cas Client
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2020-01-24

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 6.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2014-4172

  • Confirm whether Apereo .Net Cas Client is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2014-4172.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-4172

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-4172 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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