Cisco Email Security Appliance Email Message Filtering Denial of Service Vulnerability

The Cisco Email Security Appliance ESA is an email security appliance from Cisco in the U.S. AsyncOS Software is the operating system used in it. A security vulnerability exists in the email message filtering functionality in the Cisco AsyncOS Software of the Cisco ESA, which stems from the...

CVE-2018-15460

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...

CVE-2018-15460

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...

CVE-2018-15460 Cisco Email Security Appliance URL Filtering Denial of Service Vulnerability

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...

CVE-2018-15460

CVE-2018-15460 affects Cisco AsyncOS Software for Cisco Email Security Appliances (ESA). The flaw is in the email message filtering feature, caused by improper filtering of messages that reference whitelisted URLs. An unauthenticated, remote attacker can send a malicious email containing a large ...

CVE-2018-15460 Cisco Email Security Appliance URL Filtering Denial of Service Vulnerability

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...

Design/Logic Flaw

A vulnerability in the Secure/Multipurpose Internet Mail Extensions S/MIME Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to cause an affected device to corrupt...

CVE-2018-15453

A vulnerability in the Secure/Multipurpose Internet Mail Extensions S/MIME Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to cause an affected device to corrupt...

CVE-2018-15453

A vulnerability in the Secure/Multipurpose Internet Mail Extensions S/MIME Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to cause an affected device to corrupt...

CVE-2018-15453 Cisco Email Security Appliance Memory Corruption Denial of Service Vulnerability

A vulnerability in the Secure/Multipurpose Internet Mail Extensions S/MIME Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to cause an affected device to corrupt...

CVE-2018-15453 Cisco Email Security Appliance Memory Corruption Denial of Service Vulnerability

A vulnerability in the Secure/Multipurpose Internet Mail Extensions S/MIME Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to cause an affected device to corrupt...

CVE-2018-15453

Cisco AsyncOS for Cisco Email Security Appliance (ESA) contains a memory corruption DoS vulnerability (CVE-2018-15453) in S/MIME Decryption and Verification and S/MIME Public Key Harvesting. An unauthenticated remote attacker can send a malicious S/MIME-signed email to trigger memory corruption, ...

Best practices for securely using Microsoft 365—the CIS Microsoft 365 Foundations Benchmark now available

This post was cowritten by Jonathan Trull, Chief Security Advisor, Cybersecurity Solutions Group, and Sean Sweeney, Chief Security Advisor, Cybersecurity Solutions Group. Were excited to announce the availability of the Center for Internet Securitys CIS Microsoft 365 Foundations Benchmarkdevelope...

Pylocky Unlocked: Cisco Talos releases PyLocky ransomware decryptor

This tool was developed by Mike Bautista. PyLocky is a family of ransomware written in Python that attempts to masquerade as a Locky variant. This ransomware will encrypt all files on a victim machine before demanding that the user pay a ransom to gain access to their decrypted files. To combat...

Critical Flaw in Cisco's Email Security Appliance Enables 'Permanent DoS'

Cisco has patched two serious vulnerabilities – one critical and one high-severity – in its email security appliance tool. Both bugs ultimately lead to a denial of service DoS on impacted devices – and can be exploited by an attacker who simply sends an email. Overall, the company on Wednesday...

Cisco Email Security Appliance URL Filtering Denial of Service Vulnerability

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...

Cisco Email Security Appliance Memory Corruption Denial of Service Vulnerability

A vulnerability in the Secure/Multipurpose Internet Mail Extensions S/MIME Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to cause an affected device to corrupt...

Cisco Releases Security Updates

Cisco has released security updates to address vulnerabilities in Cisco AsyncOS Software for Cisco Email Security Appliance. A remote attacker could exploit these vulnerabilities to cause a denial-of-service condition. The National Cybersecurity and Communications Integration Center NCCIC, part o...

Veeam Explorer for Microsoft Exchange Javascript Execution Vulnerability

Challenge The vulnerability allows execution of arbitrary code in emails containing inline Javascript. NOTE: This has been corrected in Veeam Backup for MIcrosoft Office 365 version 3 and Veeam Backup & Replication version U4a. Cause The affected component is Veeam Explorer for Microsoft Exchange...

The vulnerability of Cisco Email Security Appliances arises from deficiencies in the mechanisms for detecting malicious content in executable files. This allows attackers to circumvent security restrictions.

The vulnerability of Cisco Email Security Appliances’ security systems stems from deficiencies in the mechanisms for detecting malicious content in executable files EXE files. Exploiting this vulnerability allows a malicious actor to send messages containing malicious files remotely...