What is the CVSS score of CVE-2023-38127?

CVE-2023-38127 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2023-38127?

Yes, a public proof-of-concept exploit is available for CVE-2023-38127. Prioritise patching immediately. EPSS: 0.6%.

Easy Postcard Max CVE-2023-38127

HIGH

Integer Overflow or Wraparound (CWE-190)

2023-10-19 talos-cna@cisco.com

Integer Overflow RCE Buffer Overflow Easy Postcard Max Ichitaro 2021 Ichitaro 2022 Ichitaro 2023 Ichitaro Government 10 Ichitaro Government 8 Ichitaro Government 9 Ichitaro Pro 3 Ichitaro Pro 4 Ichitaro Pro 5 Just Government 3 Just Government 4 Just Government 5 Just Office 3 Just Office 4 Just Office 5 Just Police 3 Just Police 4 Just Police 5

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Oct 19, 2023 - 18:15 nvd

HIGH 7.8

DescriptionNVD

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.

AnalysisAI

An integer overflow exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Integer Overflow (CWE-190), which allows attackers to cause unexpected behavior through arithmetic overflow. 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. Affected products include: Justsystems Easy Postcard Max, Justsystems Ichitaro 2021, Justsystems Ichitaro 2022, Justsystems Ichitaro 2023, Justsystems Ichitaro Government 10.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate arithmetic operations, use safe integer libraries, check bounds before allocation.