Scientific Linux Security Update : dovecot on SL5.x i386/x86_64

medium Nessus Plugin ID 60404

Synopsis

The remote Scientific Linux host is missing a security update.

Description

A flaw was discovered in the way Dovecot handled the 'mail_extra_groups' option. An authenticated attacker with local shell access could leverage this flaw to read, modify, or delete other users mail that is stored on the mail server. (CVE-2008-1199)

This issue did not affect the default Red Hat Enterprise Linux 5 Dovecot configuration. This update adds two new configuration options
-- 'mail_privileged_group' and 'mail_access_groups' -- to minimize the usage of additional privileges.

A directory traversal flaw was discovered in Dovecot's zlib plug-in.
An authenticated user could use this flaw to view other compressed mailboxes with the permissions of the Dovecot process. (CVE-2007-2231)

A flaw was found in the Dovecot ACL plug-in. User with only insert permissions for a mailbox could use the 'COPY' and 'APPEND' commands to set additional message flags. (CVE-2007-4211)

A flaw was found in a way Dovecot cached LDAP query results in certain configurations. This could possibly allow authenticated users to log in as a different user who has the same password. (CVE-2007-6598)

As well, this updated package fixes the following bugs :

- configuring 'userdb' and 'passdb' to use LDAP caused Dovecot to hang. A segmentation fault may have occurred.
In this updated package, using an LDAP backend for 'userdb' and 'passdb' no longer causes Dovecot to hang.

- the Dovecot 'login_process_size' limit was configured for 32-bit systems. On 64-bit systems, when Dovecot was configured to use either IMAP or POP3, the log in processes crashed with out-of-memory errors. Errors such as the following were logged :

pop3-login: pop3-login: error while loading shared libraries:
libsepol.so.1: failed to map segment from shared object: Cannot allocate memory

In this updated package, the 'login_process_size' limit is correctly configured on 64-bit systems, which resolves this issue.

Note: this updated package upgrades dovecot to version 1.0.7. For further details, refer to the Dovecot changelog:
http://koji.fedoraproject.org/koji/buildinfo?buildID=23397

Solution

Update the affected dovecot package.

See Also

https://koji.fedoraproject.org/koji/buildinfo?buildID=23397

http://www.nessus.org/u?9160d205

Plugin Details

Severity: Medium

ID: 60404

File Name: sl_20080521_dovecot_on_SL5_x.nasl

Version: 1.7

Type: local

Agent: unix

Published: 8/1/2012

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 5/21/2008

Reference Information

CVE: CVE-2007-2231, CVE-2007-4211, CVE-2007-6598, CVE-2008-1199

CWE: 16, 264, 59