GLSA-202105-01 : Exim: Multiple vulnerabilities

critical Nessus Plugin ID 149277

Synopsis

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

Description

The remote host is affected by the vulnerability described in GLSA-202105-01 (Exim: Multiple vulnerabilities)

Multiple vulnerabilities have been discovered in Exim. Please review the CVE identifiers referenced below for details.
Impact :

A remote attacker, by connecting to the SMTP listener daemon, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Furthermore, a local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application or escalate privileges.
Workaround :

There is no known workaround at this time.

Solution

All Exim users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=mail-mta/exim-4.94.2'

See Also

https://security.gentoo.org/glsa/202105-01

Plugin Details

Severity: Critical

ID: 149277

File Name: gentoo_GLSA-202105-01.nasl

Version: 1.5

Type: local

Published: 5/5/2021

Updated: 5/12/2021

Risk Information

CVSS Score Source: CVE-2020-28026

VPR

Risk Factor: High

Score: 8.4

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:gentoo:linux:exim, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/4/2021

Vulnerability Publication Date: 5/6/2021

Reference Information

CVE: CVE-2020-28007, CVE-2020-28008, CVE-2020-28009, CVE-2020-28010, CVE-2020-28011, CVE-2020-28012, CVE-2020-28013, CVE-2020-28014, CVE-2020-28015, CVE-2020-28016, CVE-2020-28017, CVE-2020-28018, CVE-2020-28019, CVE-2020-28020, CVE-2020-28021, CVE-2020-28022, CVE-2020-28023, CVE-2020-28024, CVE-2020-28025, CVE-2020-28026, CVE-2021-27216

GLSA: 202105-01

IAVA: 2021-A-0216