A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to cause the CPU utilization to increase to 100 percent, causing a denial of service (DoS) condition on an affected device. The vulnerability is due to improper filtering of email messages that contain references to whitelisted URLs. An attacker could exploit this vulnerability by sending a malicious email message that contains a large number of whitelisted URLs. A successful exploit could allow the attacker to cause a sustained DoS condition that could force the affected device to stop scanning and forwarding email messages.
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to cause the CPU utilization to increase to 100 percent, causing a denial of service (DoS) condition on an affected device. The vulnerability is due to improper filtering of email messages that contain references to whitelisted URLs. An attacker could exploit this vulnerability by sending a malicious email message that contains a large number of whitelisted URLs. A successful exploit could allow the attacker to cause a sustained DoS condition that could force the affected device to stop scanning and forwarding email messages.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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OR
*cpe:2.3:o:cisco:email_security_appliances_firmware:10.0.3-004:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:email_security_appliances_firmware:11.0.0-274:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:email_security_appliances_firmware:11.0.2-037:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:email_security_appliances_firmware:11.1.0-135:*:*:*:*:*:*:*
AND
OR
*cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions up to (excluding) 11.0.2-044_md
*cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions from (including) 11.1.0 up to (excluding) 11.1.2-023_md
OR
cpe:2.3:h:cisco:email_security_appliance:-:*:*:*:*:*:*:*
Removed
CVSS V3
NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added
CWE
NIST CWE-770
Removed
CWE
NIST CWE-20
CVE Modified by Cisco Systems, Inc.10/09/2019 7:35:41 PM
Action
Type
Old Value
New Value
Added
CVSS V3
Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added
CWE
Cisco Systems, Inc. CWE-20
Initial Analysis2/21/2019 1:55:44 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:o:cisco:email_security_appliances_firmware:10.0.3-004:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:email_security_appliances_firmware:11.0.0-274:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:email_security_appliances_firmware:11.0.2-037:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:email_security_appliances_firmware:11.1.0-135:*:*:*:*:*:*:*
Added
CVSS V2
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added
CVSS V3
AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added
CWE
CWE-20
Changed
Reference Type
http://www.securityfocus.com/bid/106507 No Types Assigned
http://www.securityfocus.com/bid/106507 Third Party Advisory, VDB Entry
Changed
Reference Type
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-esa-url-dos No Types Assigned