Cisco Email Security Appliance HTTP Response Header Injection (cisco-sa-ESA-HTTP-Inject-nvsycUmR)

medium Nessus Plugin ID 166905


The remote device is missing a vendor-supplied security patch.


According to its self-reported version, Cisco Email Security Appliance is affected by a vulnerability due to a failure to sanitize input values. An unauthenticated, remote attacker can exploit this, by injecting malicious HTTP headers, in order to conduct an HTTP response splitting attack.

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


Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvz24026, CSCwa84908

See Also

Plugin Details

Severity: Medium

ID: 166905

File Name: cisco-sa-ESA-HTTP-Inject-nvsycUmR.nasl

Version: 1.10

Type: combined

Family: CISCO

Published: 11/3/2022

Updated: 9/21/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 1.4


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-2022-20772


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

CPE: cpe:/o:cisco:email_security_appliance_firmware, cpe:/a:cisco:email_security_appliance

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/2/2022

Vulnerability Publication Date: 11/2/2022

Reference Information

CVE: CVE-2022-20772

CWE: 113

CISCO-SA: cisco-sa-ESA-HTTP-Inject-nvsycUmR

IAVA: 2022-A-0463-S

CISCO-BUG-ID: CSCvz24026, CSCwa84908