Multiple vulnerabilities in Cisco AsyncOS for Cisco Email Security Appliance and Content Security Management Appliance

1) Input validation error

EUVDB-ID: #VU25480

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-1947

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists within the email message filtering feature due to improper handling of email messages that contain large attachments. A remote attacker can send a malicious email message through the targeted device and cause a permanent DoS condition due to high CPU utilization.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco AsyncOS for Cisco Email Security Appliance: 11.1.0 131 - 12.1.0 085

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_asyncos_for_cisco_email_security_appliance:11.1.0 131:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_asyncos_for_cisco_email_security_appliance:12.1.0 085:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-esa-dos

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU25484

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-1983

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists within the email message filtering feature due to insufficient input validation of email attachments. A remote attacker can send an email message with a crafted attachment through an affected device and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco AsyncOS for Cisco Email Security Appliance: 11.0 - 12.0

Cisco Content Security Management Appliance: 11.0 - 12.0

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_asyncos_for_cisco_email_security_appliance:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_asyncos_for_cisco_email_security_appliance:11.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_asyncos_for_cisco_email_security_appliance:12.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_content_security_management_appliance:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_content_security_management_appliance:11.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_content_security_management_appliance:12.0:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-esa-sma-dos

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.