Executive Summary

Summary
TitleMaildrop: privilege escalation
Informations
NameGLSA-201009-02First vendor Publication2010-09-06
VendorGentooLast vendor Modification2010-09-06
Severity (Vendor) HighRevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score6.9Attack RangeLocal
Cvss Impact Score10Attack ComplexityMedium
Cvss Expoit Score3.4AuthentificationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Insecure permission handling in maildrop might allow local attackers to elevate their privileges.

Background

maildrop is the mail filter/mail delivery agent that is used by the Courier Mail Server.

Description

Christoph Anton Mitterer reported that maildrop does not properly drop its privileges when run as root.

Impact

A local attacker could create a specially crafted .mailfilter file, possibly leading to the execution of arbitrary commands with the "root"
group privileges. NOTE: Successful exploitation requires that maildrop is run as root with the -d option.

Workaround

There is no known workaround at this time.

Resolution

All maildrop users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/maildrop-2.4.2"

References

[ 1 ] CVE-2010-0301 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0301

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201009-02.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201009-02.xml

CWE : Common Weakness Enumeration

idName
CWE-264Permissions, Privileges, and Access Controls

CPE : Common Platform Enumeration

TypeDescriptionCount
Application56

Open Source Vulnerability Database (OSVDB)

idDescription
61986maildrop main.C Supplementary Group Local Privilege Escalation