CVE intelligence and bounded remediation

CVE-2023-38127 — An integer overflow exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372

High CVSS 7.8

An integer overflow exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372. A specially crafted document can cause the parser to make an under-sized allocation, which can later allow for memory corruption, potentially resulting in arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Severity
High
CVSS
7.8 (3.1)
Published
2023-10-19
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-190

Affected products

  • justsystems / easy_postcard_max
  • justsystems / ichitaro_2021
  • justsystems / ichitaro_2022
  • justsystems / ichitaro_2023 / 1.0.1.59372
  • justsystems / ichitaro_government_10
  • justsystems / ichitaro_government_8

Showing 6 representative product identities from 19 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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