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Ubuntu 4.10 : cyrus21-imapd vulnerability (USN-37-1)

critical Nessus Plugin ID 20653

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Recently another buffer overflow has been discovered in the SASL authentication module of the Cyrus IMAP server. An off-by-one comparison error in the mysasl_canon_user() function could lead to a missing termination of an user name string.

This vulnerability could allow remote, attacker-supplied machine code to be executed in the context of the affected server process. Since the IMAP server usually runs as unprivileged user 'cyrus', there is no possibility of root privilege escalation.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 20653

File Name: ubuntu_USN-37-1.nasl

Version: 1.15

Type: local

Agent: unix

Published: 1/15/2006

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: Critical

Base Score: 10

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:cyrus21-admin, p-cpe:/a:canonical:ubuntu_linux:cyrus21-clients, p-cpe:/a:canonical:ubuntu_linux:cyrus21-common, p-cpe:/a:canonical:ubuntu_linux:cyrus21-dev, p-cpe:/a:canonical:ubuntu_linux:cyrus21-doc, p-cpe:/a:canonical:ubuntu_linux:cyrus21-imapd, p-cpe:/a:canonical:ubuntu_linux:cyrus21-murder, p-cpe:/a:canonical:ubuntu_linux:cyrus21-pop3d, p-cpe:/a:canonical:ubuntu_linux:libcyrus-imap-perl21, cpe:/o:canonical:ubuntu_linux:4.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 12/2/2004

Reference Information

CVE: CVE-2004-1067

USN: 37-1