Oracle Application Server 10G ORA_DAV Basic Authentication Bypass Vulnerability

Credit: Deniz Cevik
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-264

CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

Affected Software/Device: Oracle Application Server Portal Vulnerability: Authentication Bypass Tested Version: 10G Risk: Medium Description: Oracle Application Server Portal (OracleAS Portal) is a Web-based application for building and deploying portals. It provides a secure, manageable environment for accessing and interacting with enterprise software services and information resources. Initially /dav_portal/portal/ directory is being protected using basic authentication. It is possible to bypass and access content of dav_portal by adding a specially crafted cookie value in the http request header. Sample Request: In order to construct a special http request first visit "http:/site/pls/portal/%0A" url. This request adds special session id into cookie. Subsequent connection attempts to "http://site/dav_portal/portal/" will reveal the contents of directory without any authentication. Deniz CEVIK

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