Debian DSA-2242-1 : cyrus-imapd-2.2 - implementation error

medium Nessus Plugin ID 55030

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Synopsis

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

Description

It was discovered that the STARTTLS implementation of the Cyrus IMAP server does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted IMAP, LMTP, NNTP and POP3 sessions by sending a cleartext command that is processed after TLS is in place.

Solution

Upgrade the cyrus-imapd-2.2 packages.

For the oldstable distribution (lenny), this problem has been fixed in version 2.2.13-14+lenny4.

For the stable distribution (squeeze), this problem has been fixed in version 2.2.13-19+squeeze1.

Plugin Details

Severity: Medium

ID: 55030

File Name: debian_DSA-2242.nasl

Version: 1.11

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/10/2011

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

CVSS v2

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 3.8

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:cyrus-imapd-2.2, cpe:/o:debian:debian_linux:5.0, cpe:/o:debian:debian_linux:6.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/25/2011

Reference Information

CVE: CVE-2011-1926

BID: 46767

DSA: 2242

Detections

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