Title: mgetty /tmp File Race Condition Vulnerability
Severity: MODERATE
Description:
mgetty is a freely available, publicly maintained software package designed to handle dialin and fax services on the Linux Operating System. A problem exists with could allow a symbolic link attack.
The problem occurs in the handling of files created in the /tmp directory. During execution of the program, files are created in the /tmp directory. However, these files are created in an insecure manner, which makes it possible to guess the filename of a future /tmp file. This makes it possible for a user with malicious motives to create a number of symbolic links in the /tmp directory, and potentially append to or overwrite system files that are write-accessible to the UID executing mgetty, normally root.
Affected Products:
- Caldera OpenLinux Desktop 2.3.0
- Debian Linux 2.2.0
- Debian Linux 2.2.0 68k
- Debian Linux 2.2.0 alpha
- Debian Linux 2.2.0 arm
- Debian Linux 2.2.0 powerpc
- Debian Linux 2.2.0 sparc
- MandrakeSoft Linux Mandrake 6.0.0
- MandrakeSoft Linux Mandrake 6.1.0
- MandrakeSoft Linux Mandrake 7.0.0
- MandrakeSoft Linux Mandrake 7.1.0
- MandrakeSoft Linux Mandrake 7.2.0
- RedHat Linux 5.2.0
- RedHat Linux 5.2.0 alpha
- RedHat Linux 5.2.0 i386
- RedHat Linux 5.2.0 sparc
- RedHat Linux 6.2.0
- RedHat Linux 6.2.0 alpha
- RedHat Linux 6.2.0 i386
- RedHat Linux 6.2.0 sparc
- RedHat Linux 7.0.0
- RedHat Linux 7.0.0 alpha
- RedHat Linux 7.1.0
- RedHat Linux 7.1.0 i386
- RedHat mgetty-1.1.14-5.i386.rpm 0.0.0
- RedHat mgetty-1.1.21-4.i386.rpm 0.0.0
- RedHat mgetty-1.1.22-1.i386.rpm 0.0.0
- RedHat mgetty-1.1.25-2.i386.rpm 0.0.0
- RedHat mgetty-sendfax-1.1.14-5.i386.rpm 0.0.0
- RedHat mgetty-sendfax-1.1.21-4.i386.rpm 0.0.0
- RedHat mgetty-sendfax-1.1.22-1.i386.rpm 0.0.0
- RedHat mgetty-sendfax-1.1.25-2.i386.rpm 0.0.0
- RedHat mgetty-viewfax-1.1.14-5.i386.rpm 0.0.0
- RedHat mgetty-viewfax-1.1.21-4.i386.rpm 0.0.0
- RedHat mgetty-viewfax-1.1.22-1.i386.rpm 0.0.0
- RedHat mgetty-viewfax-1.1.25-2.i386.rpm 0.0.0
- RedHat mgetty-voice-1.1.14-5.i386.rpm 0.0.0
- RedHat mgetty-voice-1.1.21-4.i386.rpm 0.0.0
- RedHat mgetty-voice-1.1.22-1.i386.rpm 0.0.0
- RedHat mgetty-voice-1.1.25-2.i386.rpm 0.0.0
- SCO eDesktop 2.4.0
- SCO eServer 2.3.0
- WireX Immunix OS 7.0.0 -Beta
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