Cisco Email Security Appliance Filter Bypass Vulnerability (cisco-sa-20190501-esa-bypass)

medium Nessus Plugin ID 126823

Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Email Security Appliance (ESA) is affected by following vulnerability

- A vulnerability in certain attachment detection mechanisms of the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of an affected device.The vulnerability is due to improper detection of certain content sent to an affected device. An attacker could exploit this vulnerability by sending certain file types without Content-Disposition information to an affected device. A successful exploit could allow an attacker to send messages that contain malicious content to users. (CVE-2019-1844)

Please see the included Cisco BIDs and Cisco Security Advisory for more information

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvm36810

See Also

http://www.nessus.org/u?995db1a1

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvm36810

Plugin Details

Severity: Medium

ID: 126823

File Name: cisco-sa-20190501-esa-bypass.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 7/19/2019

Updated: 6/3/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-1844

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

Required KB Items: Settings/ParanoidReport, Host/AsyncOS/Cisco Email Security Appliance/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/1/2019

Vulnerability Publication Date: 5/3/2019

Reference Information

CVE: CVE-2019-1844

BID: 108149

CWE: 20

CISCO-SA: cisco-sa-20190501-esa-bypass

IAVA: 2019-A-0243-S

CISCO-BUG-ID: CSCvm36810