Oracle9i Application Server Web service long string denial of service
| oracle-appserver-string-dos (7308) |  Medium Risk |
Description:
Oracle9i Application Server is vulnerable to a denial of service attack caused by a buffer overflow in the Web Cache services. By sending a specially-crafted HTTP request containing a string of 3094 characters to a Web Cache service, a remote attacker can overflow a buffer and cause the process to hang to consume all available CPU resources. The server must be restarted to regain normal functionality.
The default Web Cache services include the "Incoming Web Cache Proxy" port, the "Administrative" port, the "Web XML" invalidation port, and the "Statistics" port. A reboot is required in order to regain normal functionality.
Consequences:
Denial of Service
Remedy:
For Oracle9i Application Server 2.0.0.1.0 running on Windows NT/Windows 2000:
Apply the 2044682 patch, available from the Oracle MetaLink Web site. See References.
For Oracle9i Application Server 2.0.0.1.0 running on Solaris (Sparc):
Apply the 2042106 patch, available from the Oracle MetaLink Web site. See References.
For Oracle9i Application Server 2.0.0.1.0 running on HP-UX:
Apply the 2043908 patch, available from the Oracle MetaLink Web site. See References.
For Oracle9i Application Server 2.0.0.1.0 running on Linux:
Apply the 2043924 patch, available from the Oracle MetaLink Web site. See References.
For Oracle9i Application Server 2.0.0.1.0 running on Tru64 Unix:
Apply the 2043921 patch, available from the Oracle MetaLink Web site. See References.
For Oracle9i Application Server 2.0.0.1.0 running on AIX:
Apply the 2043917 patch, available from the Oracle MetaLink Web site. See References.
References:
- CERT Advisory CA-2001-29: Oracle9iAS Web Cache vulnerable to buffer overflow.
- Defcom Labs Advisory def-2001-30: Oracle9iAS Web Cache/2.0.0.1.0 Multiple DoS and buffer overflow.
- Oracle MetaLink Web site: Welcome to OracleMetaLInk.
- Oracle Security Alert #18: Oracle9iAS Web Cache Overflow Vulnerability.
- BID-3449: Oracle9iAS Web Cache Buffer Overflow DoS Vulnerability
Platforms Affected:
- Oracle Application Server Web Cache 2.0.0.1
Reported:
Oct 18, 2001
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