CVE intelligence and bounded remediation

CVE-2017-5455 — Redhat Enterprise Linux security vulnerability

High CVSS 7.5

The internal feed reader APIs that crossed the sandbox barrier allowed for a sandbox escape and escalation of privilege if combined with another vulnerability that resulted in remote code execution inside the sandboxed process. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53.

Severity
High
CVSS
7.5 (3.0)
Published
2018-06-11
CISA KEV
Not currently listed
Ecosystem
browser

Affected products

  • redhat / enterprise_linux / 7.0
  • redhat / enterprise_linux_desktop / 7.0
  • redhat / enterprise_linux_server / 7.0
  • redhat / enterprise_linux_server_aus / 7.3
  • redhat / enterprise_linux_server_aus / 7.4
  • redhat / enterprise_linux_server_eus / 7.3

Showing 6 representative product identities from 11 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Command, code, expression, and template injection

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

Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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