Exposed Sensitive Information within SAP Enterprise Portal
Impact On Business
One HTTP endpoint of the portal exposes sensitive information that could be used by an attacker with administrator privileges, in conjunction with other attacks (e.g. XSS).
Affected Components Description
SAP Enterprise Portal is a web frontend component for SAP Netweaver.
Affected components:
- EP-RUNTIME 7.10
- EP-RUNTIME 7.11
- EP-RUNTIME 7.20
- EP-RUNTIME 7.30
- EP-RUNTIME 7.31
- EP-RUNTIME 7.40
- EP-RUNTIME 7.50
(Check SAP Note 3059764 for detailed information on affected releases)
Vulnerability Details
The SAP Portal servlet, com.sapportals.navigation.testComponent.NavigationRequestSniffer, exposes in the body html part, all headers values from requester. Sensitive information, like cookies sessions are exposed.
Example of cookie names where value are reachable:
“`
saplb_*
JSESSIONID
SAPWP_active
PortalAlias
MYSAPSSO2
JSESSIONMARKID
“`
It breaks cookie security because these sensitive data could be used and treated as normal body data.
Solution
SAP has released SAP Note 3059764 which provides patched versions of the affected components.
The patches can be downloaded from https://launchpad.support.sap.com/#/notes/3020104.
Onapsis strongly recommends SAP customers to download the related security fixes and apply them to the affected components in order to reduce business risks.
Report Timeline
- 04/26/2021: Onapsis sends details to SAP
- 04/29/2021: SAP provides internal ID
- 05/13/2021: SAP provides update
- 05/18/2021: Onapsis provides update
- 07/13/2021: SAP releases SAP Note fixing the issue.
- 11/21/2021: Advisory published
REFERENCES
Onapsis Blog Post:
https://onapsis.com/blog/sap-security-patch-day-july-2021-serious-vulnerabilities-sap-netweaver-java-fixed
Vendor Patch:
https://launchpad.support.sap.com/#/notes/3059764
Advisory Information
- Public Release Date: 11/21/2021
- Security Advisory ID: ONAPSIS-2021-0020
- Vulnerability Submission ID: 885
- Researcher(s): Yvan Genuer
Vulnerability Information
- Vendor: SAP
- Vulnerability Class: |LS|CWE-200|RS| Exposure of Sensitive Information
- CVSS v3 score: 4.5 AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
- Severity: Medium
- CVE: CVE-2021-33687
- Vendor patch Information: SAP Security Note 3059764
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Find all reported vulnerabilities at https://github.com/Onapsis/vulnerability_advisories
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