A problem has been discovered in Taylor UUCP that makes it possible for local users to gain elevated privileges. The problem is due to the handling of configuration files when passed to uucp via the --config flag. When uux receives a request to execute commands using a malicious --config file, the commands will be executed with the privileges of uuxqt, a setuid uucp daemon by default. This makes it possible for a local user to gain elevated privileges, and could lead to a local user gaining administrative access.
Hassan Consulting's Shopping Cart is commercial web store software which does not filter certain types of user-supplied input from web requests. This makes it possible for a malicious user to submit a request which causes arbitrary commands to be executed on the host (with the privileges of the webserver process). For example, special shell characters like '|' or ';' are treated as valid by Shopping Cart.
A problem has been discovered in the Dl-704 router. Upon receiving a high amount of fragmented IP packets, the router begins to become resource starved. After receiving these packets for a period greater than two minutes, the router will become unstable, ceasing operation. This results in a denial of service users on either side of the router. A power cycling is required to resume normal operation.
A vulnerability exists in Power Up HTML which allows directory traversal through the web server using ../ strings in a CGI request. This directory traversal can be used to view or execute arbitrary files on the webserver to which the web service has permissions. Failure to filter metacharacters from HTTP requests can allow user-supplied values to run.
The 'rlmadmin' user management utility included with the Merit AAA RADIUS Server package is susceptible to a trivial symbolic link attack. The program allows users to specify a directory from which configuration files should be loaded at runtime. A help file, 'rlmadmin.help', is loaded from this directory and displayed directly to the user when the program is run. The vulnerability exists because the program is setuid root and does not check if the help file is symbolically linked before displaying its contents to the user. As a local user, it is trivial for a local user to read any file on the system. This may lead to the disclosure of sensitive data and system compromise.
The Microsoft IIS web server supports a non-standard method of encoding web requests. Because this method is non-standard, intrusion detection systems may not detect attacks encoded using this method. This vulnerability only affects intrusion detection systems in environments where '%u' unicode encoding is supported by a webserver (ie, IIS). If there is no webserver support for this encoding method or if it is disabled, there will be no targets to which encoded attacks can be sent.
The Windows 2000 RunAs service allows an application or service to be executed as a different user. It is accessed by holding down the shift key and right mouse clicking on an icon, then selecting 'Run as...' from the context menu. When the service is invoked, it creates a named pipe session with the specified server for authentication of credentials. The RunAs service only allows one instance of this session at a time. If a client were to create this pipe on the server without requesting any service, other clients would be unable to connect to this service.
A problem has been discovered in the HP-UX operating system that can allow a local user to gain elevated privileges. swverify contains a buffer overflow which is exploitable upon receiving 6039 bytes as an argument. The swverify program is setuid root, which allows a local user to execute code as root, potentially gaining administrative access to the vulnerable system.
The print protocol daemon, 'in.lpd' (or 'lpd'), shipped with Solaris may allow for remote attackers to execute arbitrary commands on target hosts with superuser privileges. It has been reported that it is possible to execute commands on target hosts through lpd by manipulating the use of sendmail by the daemon. If this vulnerability is successfully exploited, remote attackers can execute any command on the target host with superuser privileges.
Microsoft Outlook Express 6 contains a new security feature which prevents users from opening potentially harmful file attachments. A vulnerability exists which allows a file embedded within an HTML frame in an email message to bypass the dangerous file attachment type security feature. When a message containing an attachment embedded in this way is opened or previewed, the user is automatically prompted to open or save the attachment. If the user attempts to open the file immediately, the action will fail. However, an assembler coded .exe attachment which has had it's extension changed to .bat will execute immediately. Regardless of the extension type, the user is able to save the attachment to disk.
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