CVE-2021-2303

Oracle OSS Support Tools Diagnostic Assistant XML External Entity Processing Information Disclosure Vulnerability

Severity Score

4.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Vulnerability in the OSS Support Tools product of Oracle Support Tools (component: Diagnostic Assistant). The supported version that is affected is Prior to 2.12.41. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise OSS Support Tools. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all OSS Support Tools accessible data. CVSS 3.1 Base Score 4.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).

Una vulnerabilidad en el producto OSS Support Tools de Oracle Support Tools (componente: Diagnostic Assistant). La versión compatible que está afectada es versiones anteriores a 2.12.41. Una vulnerabilidad fácilmente explotable permite a un atacante muy privilegiado con acceso a la red por medio de HTTP comprometer a OSS Support Tools. Los ataques con éxito de esta vulnerabilidad pueden resultar en un acceso no autorizado a datos críticos o acceso completo a todos los datos accesibles de OSS Support Tools. CVSS 3.1 Puntuación Base 4.9 (Impactos en la Confidencialidad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N)

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Oracle OSS Support Tools. Authentication is required to exploit this vulnerability.
The specific flaw exists within the Diagnostic Assistant component. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of the service account.

*Credits: Quynh Le of VNPT ISC

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2020-12-09 CVE Reserved
2021-04-22 CVE Published
2024-09-25 EPSS Updated
2024-09-26 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-21-458	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2021.html	2021-04-30

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oracle Search vendor "Oracle"		Oss Support Tools Search vendor "Oracle" for product "Oss Support Tools"				< 2.12.41 Search vendor "Oracle" for product "Oss Support Tools" and version " < 2.12.41"		-		Affected