Caldera uux Status Filename Buffer Overflow Vulnerability
BID:2947
Info
Caldera uux Status Filename Buffer Overflow Vulnerability
| Bugtraq ID: | 2947 |
| Class: | Boundary Condition Error |
| CVE: | |
| Remote: | No |
| Local: | Yes |
| Published: | Jun 26 2001 12:00AM |
| Updated: | Jun 26 2001 12:00AM |
| Credit: | Reported to bugtraq by Caldera Systems Inc. in an advisory dated June 27, 2001. |
| Vulnerable: |
Caldera UnixWare 7 Caldera OpenServer 5.0.6 Caldera OpenServer 5.0.5 |
| Not Vulnerable: | |
Discussion
Caldera uux Status Filename Buffer Overflow Vulnerability
UUCP allows the copying of files between different UNIX systems and for sending commands for execution on a remote system.
uux is a component of uucp used to retrieve a number of files from remote systems, execute a command on a specified host, and record the results (from standard output) to a given file.
By supplying an excessively long string as an argument to uux on the command line, it is possible for a local attacker to overflow the program's input buffer.
As a result of this overflow, excess data copied onto the stack can overwrite critical parts of the stack frame such as the calling function's return address.
Since this data is supplied by the user it can be crafted to alter the program's flow of execution.
Properly exploited, this could grant the attacker an elevation of privileges.
UUCP allows the copying of files between different UNIX systems and for sending commands for execution on a remote system.
uux is a component of uucp used to retrieve a number of files from remote systems, execute a command on a specified host, and record the results (from standard output) to a given file.
By supplying an excessively long string as an argument to uux on the command line, it is possible for a local attacker to overflow the program's input buffer.
As a result of this overflow, excess data copied onto the stack can overwrite critical parts of the stack frame such as the calling function's return address.
Since this data is supplied by the user it can be crafted to alter the program's flow of execution.
Properly exploited, this could grant the attacker an elevation of privileges.
Exploit / POC
Caldera uux Status Filename Buffer Overflow Vulnerability
Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
Solution / Fix
Caldera uux Status Filename Buffer Overflow Vulnerability
Solution:
Fixed binaries are available:
Caldera OpenServer 5.0.5
Caldera OpenServer 5.0.6
Solution:
Fixed binaries are available:
Caldera OpenServer 5.0.5
-
Caldera CSSA-2002-SCO.34
ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.34
Caldera OpenServer 5.0.6
-
Caldera CSSA-2002-SCO.34
ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.34
References
Caldera uux Status Filename Buffer Overflow Vulnerability
References:
References: