Resource exhaustion in Cisco Asyncos
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 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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.025 (83.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-15460?
- CVE-2018-15460 is a high-severity vulnerability in Cisco Asyncos, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2019-01-10.
- How severe is CVE-2018-15460?
- High severity. CVSS v3 base score is 8.6 out of 10.