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ReviewHigh

CVE-2019-12698

Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software

A vulnerability in the WebVPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for a specific WebVPN HTTP page request. An attacker could exploit this vulnerability by sending multiple WebVPN HTTP page load requests for a specific URL. A successful exploit could allow the attacker to increase CPU load on the device, resulting in a denial of service (DoS) condition, which co...

CVSS
7.5
EPSS
1.97%
79.0% percentile
CISA KEV
Not listed
Published
2019.10.03
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.97%
Technical severityCVSS 7.5

Vulnerability overview

A vulnerability in the WebVPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for a specific WebVPN HTTP page request. An attacker could exploit this vulnerability by sending multiple WebVPN HTTP page load requests for a specific URL. A successful exploit could allow the attacker to increase CPU load on the device, resulting in a denial of service (DoS) condition, which co...

Affected product and versions

Product
Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software
Affected versions
>= unspecified, < 9.6.4.31, >= 9.7 < 9.8.4.9, >= 9.9 < 9.9.2.56, >= 9.10 < 9.10.1.30, >= 9.12 < 9.12.2.9, >= 9.13 < 9.13.1, < 6.2.3.15, >= 6.3.0 < 6.3.0.5, >= 6.4.0 < 6.4.0.6
Fixed versions
9.6.4.31, 9.8.4.9, 9.9.2.56, 9.10.1.30, 9.12.2.9, 9.13.1, 6.2.3.15, 6.3.0.5, 6.4.0.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-400