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Last updated: 10/24/2014 4:37:17 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-1601

Original release date: 05/11/2009
Last revised: 05/12/2009
Source: US-CERT/NIST

Overview

The Ubuntu clamav-milter.init script in clamav-milter before 0.95.1+dfsg-1ubuntu1.2 in Ubuntu 9.04 sets the ownership of the current working directory to the clamav account, which might allow local users to bypass intended access restrictions via read or write operations involving this directory.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 (MEDIUM) (AV:L/AC:L/Au:S/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.1
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Per https://bugs.launchpad.net/ubuntu/+source/clamav/+bug/365823 A clean install of clamav-milter (0.95.1+dfsg-1ubuntu1.1) causes the root directory to become owned by the clamav user. This was witnessed breaking ssh chroot environment. TEST CASE: - purge any existing clamav-milter installation, make sure you don't have any old /etc/init.d/clamav-milter init script around - check root directory's owner (should be root:root) - sudo apt-get install clamav-milter (the last one in Jaunty is 0.95.1+dfsg-1ubuntu1.1) - after installing the package, clamav-milter will start automatically (at least 'init.d/clamav-milter start' will execute) - check the root directory's owner:

References to Advisories, Solutions, and Tools

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External Source: UBUNTU
Name: USN-770-1
Type: Advisory
External Source: SECUNIA
Name: 35000
Type: Advisory
External Source: XF
Name: clamav-clamavmilter-security-bypass(50311)
Type: Patch Information
External Source: BID
Name: 34818
Type: Patch Information
External Source: CONFIRM
Name: https://launchpad.net/bugs/365823

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Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)