Title: squid /tmp File Race Condition Vulnerability
Severity: LOW
Description:
squid is a freely available Web Proxy software package, written and maintained by the National Science Foundation. Problems with the software could lead to a race condition.
The problem occurs in the operation of the software and it's creation of /tmp files. The squid package can be configured to send out emails to the administrator when updates occur. However, when the email is created, files in the /tmp directory are created insecurely and the pre-existance of files is not queried. The creation of the files in the /tmp directory normally occur under the conditions of either using a development version of squid, or when the system clock is reporting an incorrect time. Therefore, it is possible for a user with malicious motives to guess the handle of a future /tmp file, and create a symbolic link to a file writable by the UID of the squid process, thus overwriting a file owned by the squid user, or appending to and corrupting the file.
Affected Products:
- 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
- National Science Foundation Squid Web Proxy 2.3.0STABLE4
- 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 7.0.0 i386
- RedHat Linux 7.1.0 alpha
- RedHat Linux 7.1.0 i386
- RedHat Linux 7.1.0 ia64
- Trustix Secure Linux 1.1.0
- Trustix Secure Linux 1.2.0
- Turbolinux Turbolinux 6.0.0
- Turbolinux Turbolinux 6.0.1
- Turbolinux Turbolinux 6.0.2
- Turbolinux Turbolinux 6.0.3
- Turbolinux Turbolinux 6.0.4
- Turbolinux Turbolinux 6.0.5
- Turbolinux Turbolinux Workstation 6.1.0
- WireX Immunix OS 7.0.0 -Beta
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