CVE-2021-2400: Oracle Business Intelligence SAXParser XML External Entity Processing Information Disclosure Vulnerability
First published: Wed Jul 21 2021(Updated: )
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Oracle Business Intelligence. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SAXParser endpoint, which listens on TCP port 9502 by default. 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.
Credit: secalert_us@oracle.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Oracle Business Intelligence | ||
| Oracle BI Publisher | =5.5.0.0.0 | |
| Oracle BI Publisher | =11.1.1.9.0 | |
| Oracle BI Publisher | =12.2.1.3.0 | |
| Oracle BI Publisher | =12.2.1.4.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-2400?
CVE-2021-2400 is a vulnerability that allows remote attackers to disclose sensitive information on affected installations of Oracle Business Intelligence.
How can this vulnerability be exploited?
This vulnerability can be exploited by sending malicious XML external entities to the SAXParser endpoint of Oracle Business Intelligence.
Is authentication required to exploit CVE-2021-2400?
No, authentication is not required to exploit this vulnerability.
What is the severity of CVE-2021-2400?
CVE-2021-2400 has a severity rating of high with a CVSS score of 7.5.
Which versions of Oracle Business Intelligence are affected by this vulnerability?
Oracle Business Intelligence versions 5.5.0.0.0, 11.1.1.9.0, 12.2.1.3.0, and 12.2.1.4.0 are affected by CVE-2021-2400.
How can I fix CVE-2021-2400?
To fix CVE-2021-2400, it is recommended to apply the necessary patches provided by Oracle.
Where can I find more information about CVE-2021-2400?
You can find more information about CVE-2021-2400 on the official Oracle Security Alerts page and the Zero Day Initiative advisory.
- collector/zdi-advisory
- alias/ZDI-21-886
- alias/ZDI-CAN-13065
- alias/CVE-2021-2400
- collector/nvd-index
- vendor/oracle
- canonical/oracle business intelligence
- canonical/oracle bi publisher
- version/oracle bi publisher/5.5.0.0.0
- version/oracle bi publisher/11.1.1.9.0
- version/oracle bi publisher/12.2.1.3.0
- version/oracle bi publisher/12.2.1.4.0