FreeBSD : mod_dosevasive -- insecure temporary file creation (88ff90f2-6e43-11d9-8c87-000a95bc6fae)

high Nessus Plugin ID 19018

Synopsis

The remote FreeBSD host is missing a security-related update.

Description

An LSS Security Advisory reports :

When a denial of service attack is detected, mod_dosevasive will, among other things, create a temporary file which it will use to trace actions from the offensive IP address. This file is insecurely created in /tmp and it's name is easily predictable.

It is then easy for an attacker to create arbitrary files in any directory that the user under which apache runs has privileges to write.

[...] once the target file is opened, there is a race attack (although difficult to exploit) which can lead to mod_dosevasive overwriting any file that the user under which apache runs has privileges to write.

Solution

Update the affected package.

See Also

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=77513

http://www.nessus.org/u?a202fd18

http://www.nessus.org/u?ea24deaf

Plugin Details

Severity: High

ID: 19018

File Name: freebsd_pkg_88ff90f26e4311d98c87000a95bc6fae.nasl

Version: 1.16

Type: local

Published: 7/13/2005

Updated: 1/6/2021

Supported Sensors: Nessus

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:mod_dosevasive20, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 1/24/2005

Vulnerability Publication Date: 1/4/2005