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Home›CVE index›CVE-2019-15992
Review reviewHigh

CVE-2019-15992

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

A vulnerability in the implementation of the Lua interpreter integrated in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying Linux operating system of an affected device. The vulnerability is due to insufficient restrictions on the allowed Lua function calls within the context of user-supplied Lua scripts. A successful exploit could allow the attacker to trigger a heap overflow condition and execute arbitrary code with root privilege...

CVSS
7.2
EPSS
4.12%
89.9% percentile
CISA KEV
Not listed
Published
2020.09.23
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability4.12%
Technical severityCVSS 7.2

Vulnerability overview

A vulnerability in the implementation of the Lua interpreter integrated in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying Linux operating system of an affected device. The vulnerability is due to insufficient restrictions on the allowed Lua function calls within the context of user-supplied Lua scripts. A successful exploit could allow the attacker to trigger a heap overflow condition and execute arbitrary code with root privilege...

Affected product and versions

Product
Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software
Affected versions
< 9.6.4.36, >= 9.7 < 9.8.4.15, >= 9.9 < 9.9.2.61, >= 9.10 < 9.10.1.32, >= 9.12 < 9.12.3, >= 9.13 < 9.13.1.4, >= 9.14 < 9.14.2.7, >= 9.15 < 9.15.1.4, < 6.2.3.16, >= 6.3.0 < 6.3.0.6, >= 6.4.0 < 6.4.0.7, >= 6.5.0 < 6.5.0.2
Fixed versions
9.6.4.36, 9.8.4.15, 9.9.2.61, 9.10.1.32, 9.12.3, 9.13.1.4, 9.14.2.7, 9.15.1.4, 6.2.3.16, 6.3.0.6, 6.4.0.7, 6.5.0.2

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:H/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-119, CWE-787