What is the CVSS score of CVE-2023-34366?

CVE-2023-34366 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-2023-34366?

Yes, a public proof-of-concept exploit is available for CVE-2023-34366. Prioritise patching immediately. EPSS: 0.6%.

Easy Postcard Max CVE-2023-34366

HIGH

Use After Free (CWE-416)

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

Use After Free RCE Memory Corruption 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

A use-after-free vulnerability exists in the Figure stream parsing functionality of Ichitaro 2023 1.0.1.59372. A specially crafted document can cause memory corruption, resulting in arbitrary code execution. Victim would need to open a malicious file to trigger this vulnerability.

AnalysisAI

A use-after-free vulnerability exists in the Figure stream parsing functionality 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 Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. A use-after-free vulnerability exists in the Figure stream parsing functionality of Ichitaro 2023 1.0.1.59372. A specially crafted document can cause memory corruption, resulting in arbitrary code execution. Victim would need to open 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. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.