Debian DLA-2650-1 : exim4 security update

critical Nessus Plugin ID 149345

Synopsis

The remote Debian host is missing a security update.

Description

The Qualys Research Labs reported several vulnerabilities in Exim, a mail transport agent, which could result in local privilege escalation and remote code execution.

Details can be found in the Qualys advisory at https://www.qualys.com/2021/05/04/21nails/21nails.txt

For Debian 9 stretch, these problems have been fixed in version 4.89-2+deb9u8.

We recommend that you upgrade your exim4 packages.

For the detailed security status of exim4 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/exim4

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

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2021/05/msg00004.html

https://packages.debian.org/source/stretch/exim4

https://security-tracker.debian.org/tracker/source-package/exim4

https://www.qualys.com/2021/05/04/21nails/21nails.txt

Plugin Details

Severity: Critical

ID: 149345

File Name: debian_DLA-2650.nasl

Version: 1.4

Type: local

Agent: unix

Published: 5/7/2021

Updated: 5/12/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

CVSS Score Source: CVE-2020-28026

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

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

CVSS v3

Risk Factor: Critical

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:exim4, p-cpe:/a:debian:debian_linux:exim4-base, p-cpe:/a:debian:debian_linux:exim4-config, p-cpe:/a:debian:debian_linux:exim4-daemon-heavy, p-cpe:/a:debian:debian_linux:exim4-daemon-heavy-dbg, p-cpe:/a:debian:debian_linux:exim4-daemon-light, p-cpe:/a:debian:debian_linux:exim4-daemon-light-dbg, p-cpe:/a:debian:debian_linux:exim4-dbg, p-cpe:/a:debian:debian_linux:exim4-dev, p-cpe:/a:debian:debian_linux:eximon4, 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: 5/5/2021

Vulnerability Publication Date: 5/6/2021

Reference Information

CVE: CVE-2020-28007, CVE-2020-28008, CVE-2020-28009, CVE-2020-28011, CVE-2020-28012, CVE-2020-28013, CVE-2020-28014, CVE-2020-28015, CVE-2020-28017, CVE-2020-28019, CVE-2020-28020, CVE-2020-28021, CVE-2020-28022, CVE-2020-28023, CVE-2020-28024, CVE-2020-28025, CVE-2020-28026

IAVA: 2021-A-0216