Oracle9i Application Server DAV_PUBLIC format string denial of service
| oracle-appserver-davpublic-dos (11330) |  High Risk |
Description:
Oracle9i Application Server is vulnerable to a denial of service attack, caused by a format string vulnerability in the ap_log_error() function in the mod_dav module, which is accessible using the DAV_PUBLIC directory. A remote attacker could exploit this vulnerability by sending a specially-crafted URL request to the DAV_PUBLIC directory to cause denial of service against the affected server or execute arbitrary commands on the server.
Note: This vulnerability may also affect other platforms that include a mod_dav module that permits user-supplied strings to be passed to the ap_log_error() function.
Platforms Affected:
- Oracle, Application Server 9.0.2
Remedy:
Upgrade to the latest version of Oracle9i Application Server (9.0.3 or later), or apply the workaround for this vulnerability, as listed in Oracle Security Alert #52. See References.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Tue Feb 18 2003 - 12:44:16 CST, CSSA-2003-007.0 Advisory withdrawn. Re: Security Update: [CSSA-2003-007.0] Linux: Apache mod_dav module format string vulnerability at http://archives.neohapsis.com/archives/bugtraq/2003-02/0215.html.
- BugTraq Mailing List, Tue Feb 18 2003 - 13:12:12 CST, Re: CSSA-2003-007.0 Advisory withdrawn. at http://archives.neohapsis.com/archives/bugtraq/2003-02/0216.html.
- CERT Advisory CA-2003-05, Multiple Vulnerabilities in Oracle Servers at http://www.cert.org/advisories/CA-2003-05.html.
- CIAC Information Bulletin N-046, Multiple Vulnerabilities in Oracle Servers at http://www.ciac.org/ciac/bulletins/n-046.shtml.
- NGSSoftware Insight Security Research Advisory #NISR16022003d, Oracle9i Application Server Format String Vulnerability at http://www.nextgenss.com/advisories/ora-appservfmtst.txt.
- Oracle Security Alert #52, Two Security Vulnerabilities in Oracle9i Application Server at http://otn.oracle.com/deploy/security/pdf/2003alert52.pdf.
- BID-6846: Oracle 9i Application Server DAV_PUBLIC Format String Vulnerability
- CVE-2002-0842: Format string vulnerability in certain third party modifications to mod_dav for logging bad gateway messages (e.g. Oracle9i Application Server 9.0.2) allows remote attackers to execute arbitrary code via a destination URI that forces a 502 Bad Gateway response, which causes the format string specifiers to be returned from dav_lookup_uri() in mod_dav.c, which is then used in a call to ap_log_rerror().
Reported:
Feb 11, 2003
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