What is the CVSS score of CVE-2024-21765?

CVE-2024-21765 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.2%.

Electronic Delivery Check System CVE-2024-21765

MEDIUM

Improper Restriction of XML External Entity Reference (CWE-611)

2024-01-24 vultures@jpcert.or.jp

XXE Electronic Delivery Check System Electronic Delivery Item Inspection Support System

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

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:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Jan 24, 2024 - 02:15 nvd

MEDIUM 5.5

DescriptionNVD

Electronic Delivery Check System (Doboku) Ver.18.1.0 and earlier, Electronic Delivery Check System (Dentsu) Ver.12.1.0 and earlier, Electronic Delivery Check System (Kikai) Ver.10.1.0 and earlier, and Electronic delivery item Inspection Support SystemVer.4.0.31 and earlier improperly restrict XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the system may be read by an attacker.

AnalysisAI

Electronic Delivery Check System (Doboku) Ver.18.1.0 and earlier, Electronic Delivery Check System (Dentsu) Ver.12.1.0 and earlier, Electronic Delivery Check System (Kikai) Ver.10.1.0 and earlier,. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. Electronic Delivery Check System (Doboku) Ver.18.1.0 and earlier, Electronic Delivery Check System (Dentsu) Ver.12.1.0 and earlier, Electronic Delivery Check System (Kikai) Ver.10.1.0 and earlier, and Electronic delivery item Inspection Support SystemVer.4.0.31 and earlier improperly restrict XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the system may be read by an attacker. Affected products include: Cals-Ed Electronic Delivery Check System, Cals-Ed Electronic Delivery Item Inspection Support System.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Disable external entity processing in XML parsers, use JSON instead of XML where possible.