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CVE-2023-38127

Justsystems Ichitaro 2023 integer overflow

7.8 HIGHPublic exploitEPSS 0.65%
  1. Published19 Oct 2023

Description

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Justsystems Easy Postcard Maxall versions
Justsystems Ichitaro 2021all versions
Justsystems Ichitaro 2022all versions
Justsystems Ichitaro 20231.0.1.59372
Justsystems Ichitaro Government 10all versions
Justsystems Ichitaro Government 8all versions
Justsystems Ichitaro Government 9all versions
Justsystems Ichitaro Pro 3all versions
Justsystems Ichitaro Pro 4all versions
Justsystems Ichitaro Pro 5all versions
Justsystems Just Government 3all versions
Justsystems Just Government 4all versions
Justsystems Just Government 5all versions
Justsystems Just Office 3all versions
Justsystems Just Office 4all versions
Justsystems Just Office 5all versions
Justsystems Just Police 3all versions
Justsystems Just Police 4all versions
Justsystems Just Police 5all versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-38127 being actively exploited?

CVE-2023-38127 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.65%.

How severe is CVE-2023-38127?

CVE-2023-38127 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.65% probability of exploitation.

Which products are affected by CVE-2023-38127?

Affected products include Justsystems Easy Postcard Max, Justsystems Ichitaro 2021, Justsystems Ichitaro 2022, Justsystems Ichitaro 2023, Justsystems Ichitaro Government 10, and 14 more.

How do I fix CVE-2023-38127?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-38127 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.