Detections
Analytics
Cisco Email Security Appliance Content Filter Bypass Vulnerability (cisco-sa-20190703-esa-filterpass)
high Nessus Plugin ID 128034
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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 a vulnerability in the email message scanning of Cisco AsyncOS Software due to improper input validation of certain email fields. An unauthenticated, remote attacker can exploit this vulnerability by sending a crafted email message to a recipient protected by the ESA. A successful exploit allows the attacker to bypass configured message filters and inject arbitrary scripting code inside the email body. The malicious code is not executed by default unless the recipient's email client is configured to execute scripts contained in emails.Please see the included Cisco BID and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvo55451.See Also
Plugin Details
Severity: High
ID: 128034
File Name: cisco-sa-20190703-esa-filterpass.nasl
Version: 1.6
Type: local
Family: CISCO
Published: 8/20/2019
Updated: 12/20/2019
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2019-1933
CVSS v3
Risk Factor: High
Base Score: 7.4
Temporal Score: 6.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/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: 7/3/2019
Vulnerability Publication Date: 7/3/2019
Reference Information
CVE: CVE-2019-1933
BID: 109031