Title: Sun Solaris Wall Spoofed Message Origin Vulnerability
Severity: LOW
Description:
Solaris is the freely available UNIX Operating System variant distributed by Sun Microsystems.
A problem in Solaris could make it possible for a user to send spoofed messages to all users on the system.
The wall client packaged with Solaris makes assumptions about a user's environment when the client is executed. The assumption is made that if the file descriptor of stderr points to a tty when wall is executed, the user is local. If not, the user is considered remote, and the first five bytes of the
supplied 'From' text will be used by wall as the users idenfitication. This makes it possible for a user to close stderr prior to the execution of wall, and send a spoofed message using the client.
Exploitation of this vulnerability may aid in social engineering attacks against system users. This vulnerability may also affect other implementations of the wall client.
Affected Products:
- Sun Solaris 2.5.1
- Sun Solaris 2.5.1_x86
- Sun Solaris 2.6
- Sun Solaris 2.6_x86
- Sun Solaris 7.0
- Sun Solaris 7.0_x86
- Sun Solaris 8
- Sun Solaris 8_x86
- Sun Solaris 9
References:
- Sun Microsystems: 51980
- Sun Microsystems: Sun Patch Access Page
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