CVE intelligence and bounded remediation

CVE-2016-5388 — Redhat Enterprise Linux Desktop security vulnerability

High CVSS 8.1

Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. NOTE: the vendor states "A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388"; in other words, this is not a CVE ID for a vulnerability.

Severity
High
CVSS
8.1 (3.0)
Published
2016-07-19
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-284

Affected products

  • redhat / enterprise_linux_desktop / 7.0
  • redhat / enterprise_linux_hpc_node / 7.0
  • redhat / enterprise_linux_hpc_node_eus / 7.2
  • redhat / enterprise_linux_server / 7.0
  • redhat / enterprise_linux_server_aus / 7.2
  • redhat / enterprise_linux_server_eus / 7.2

Showing 6 representative product identities from 18 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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