Ubuntu 16.04 LTS : Exim SpamAssassin vulnerability (USN-4520-1)

High Nessus Plugin ID 140659

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VPR Score: 5.9

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4520-1 advisory.

- sa-exim 4.2.1 allows attackers to execute arbitrary code if they can write a .cf file or a rule. This occurs because Greylisting.pm relies on eval (rather than direct parsing and/or use of the taint feature).
This issue is similar to CVE-2018-11805. (CVE-2019-19920)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected sa-exim package.

See Also

https://ubuntu.com/security/notices/USN-4520-1

Plugin Details

Severity: High

ID: 140659

File Name: ubuntu_USN-4520-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2020/09/18

Updated: 2020/09/18

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2019-19920

CVSS v2.0

Base Score: 9

Temporal Score: 6.7

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

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

CVSS v3.0

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:sa-exim

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

Patch Publication Date: 2020/09/18

Vulnerability Publication Date: 2019/12/22

Reference Information

CVE: CVE-2019-19920

USN: 4520-1