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CVE-2019-15992

HIGHCVSS 7.2/10EPSS 4.12%

Last modified

CVE-2019-15992 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 4.12% chance of exploitation in the next 30 days.

Description

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 privileges on the underlying Linux operating system of an affected device.

Metrics

CVSS 3.1
7.2/10

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

CVSS 3.0
7.2/10

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
4.12%

89.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance< 9.6.4.36
CiscoAdaptive Security Appliance Software>= 9.7, < 9.8.4.15
CiscoAdaptive Security Appliance Software>= 9.9, < 9.9.2.61
CiscoAdaptive Security Appliance Software>= 9.10, < 9.10.1.32
CiscoAdaptive Security Appliance Software>= 9.12, < 9.12.3
CiscoAdaptive Security Appliance Software>= 9.13, < 9.13.1.4
CiscoAdaptive Security Appliance Software>= 9.14, < 9.14.2.7
CiscoAdaptive Security Appliance Software>= 9.15, < 9.15.1.4
CiscoSecure Firewall Management Center< 6.2.3.16
CiscoSecure Firewall Management Center>= 6.3.0, < 6.3.0.6
CiscoSecure Firewall Management Center>= 6.4.0, < 6.4.0.7
CiscoSecure Firewall Management Center>= 6.5.0, < 6.5.0.2
CiscoFirepower Threat DefenseAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-15992?
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 privileges on the underlying Linux operating system of an affected device.
How severe is CVE-2019-15992?
CVE-2019-15992 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 4.12% probability of exploitation in the next 30 days.
How do I fix CVE-2019-15992?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST