Debian DSA-4510-1 : dovecot - security update

High Nessus Plugin ID 128307

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VPR Score: 7.4

Synopsis

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

Description

Nick Roessler and Rafi Rubin discovered that the IMAP and ManageSieve protocol parsers in the Dovecot email server do not properly validate input (both pre- and post-login). A remote attacker can take advantage of this flaw to trigger out of bounds heap memory writes, leading to information leaks or potentially the execution of arbitrary code.

Solution

Upgrade the dovecot packages.

For the oldstable distribution (stretch), this problem has been fixed in version 1:2.2.27-3+deb9u5.

For the stable distribution (buster), this problem has been fixed in version 1:2.3.4.1-5+deb10u1.

See Also

https://security-tracker.debian.org/tracker/source-package/dovecot

https://packages.debian.org/source/stretch/dovecot

https://packages.debian.org/source/buster/dovecot

https://www.debian.org/security/2019/dsa-4510

Plugin Details

Severity: High

ID: 128307

File Name: debian_DSA-4510.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2019/08/29

Updated: 2019/12/31

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 7.4

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:dovecot, cpe:/o:debian:debian_linux:10.0, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/08/28

Vulnerability Publication Date: 2019/08/29

Reference Information

CVE: CVE-2019-11500

DSA: 4510