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CVE-2016-6431

UnknownEPSS 2.54%

Last modified

CVE-2016-6431 is a vulnerability of currently unknown severity. A vulnerability in the local Certificate Authority (CA) feature of Cisco ASA Software before 9.6(1.5) could allow an unauthenticated, remote attacker to cause a reload of the affected system. The vulnerability is due to improper handling of crafted packets during the enrollment operation. EPSS estimates a 2.54% chance of exploitation in the next 30 days.

Description

A vulnerability in the local Certificate Authority (CA) feature of Cisco ASA Software before 9.6(1.5) could allow an unauthenticated, remote attacker to cause a reload of the affected system. The vulnerability is due to improper handling of crafted packets during the enrollment operation. An attacker could exploit this vulnerability by sending a crafted enrollment request to the affected system. An exploit could allow the attacker to cause the reload of the affected system. Note: Only HTTPS packets directed to the Cisco ASA interface, where the local CA is allowing user enrollment, can be used to trigger this vulnerability. This vulnerability affects systems configured in routed firewall mode and in single or multiple context mode.

Metrics

EPSS Probability
2.54%

83.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance Software8.0.2.11
CiscoAdaptive Security Appliance Software8.0.2.15
CiscoAdaptive Security Appliance Software8.0.3
CiscoAdaptive Security Appliance Software8.0.3.6
CiscoAdaptive Security Appliance Software8.0.3.12
CiscoAdaptive Security Appliance Software8.0.3.19
CiscoAdaptive Security Appliance Software8.0.4
CiscoAdaptive Security Appliance Software8.0.4.3
CiscoAdaptive Security Appliance Software8.0.4.9
CiscoAdaptive Security Appliance Software8.0.4.16
CiscoAdaptive Security Appliance Software8.0.4.23
CiscoAdaptive Security Appliance Software8.0.4.25
CiscoAdaptive Security Appliance Software8.0.4.28
CiscoAdaptive Security Appliance Software8.0.4.31
CiscoAdaptive Security Appliance Software8.0.4.32
CiscoAdaptive Security Appliance Software8.0.4.33
CiscoAdaptive Security Appliance Software8.0.5
CiscoAdaptive Security Appliance Software8.0.5.20
CiscoAdaptive Security Appliance Software8.0.5.23
CiscoAdaptive Security Appliance Software8.0.5.25
CiscoAdaptive Security Appliance Software8.0.5.27
CiscoAdaptive Security Appliance Software8.0.5.28
CiscoAdaptive Security Appliance Software8.0.5.31
CiscoAdaptive Security Appliance Software8.1.0.104
CiscoAdaptive Security Appliance Software8.1.1
CiscoAdaptive Security Appliance Software8.1.1.6
CiscoAdaptive Security Appliance Software8.1.2
CiscoAdaptive Security Appliance Software8.1.2.13
CiscoAdaptive Security Appliance Software8.1.2.15
CiscoAdaptive Security Appliance Software8.1.2.16
CiscoAdaptive Security Appliance Software8.1.2.19
CiscoAdaptive Security Appliance Software8.1.2.23
CiscoAdaptive Security Appliance Software8.1.2.24
CiscoAdaptive Security Appliance Software8.1.2.49
CiscoAdaptive Security Appliance Software8.1.2.50
CiscoAdaptive Security Appliance Software8.1.2.55
CiscoAdaptive Security Appliance Software8.1.2.56
CiscoAdaptive Security Appliance Software8.2.0.45
CiscoAdaptive Security Appliance Software8.2.1
CiscoAdaptive Security Appliance Software8.2.1.11
CiscoAdaptive Security Appliance Software8.2.2
CiscoAdaptive Security Appliance Software8.2.2.9
CiscoAdaptive Security Appliance Software8.2.2.10
CiscoAdaptive Security Appliance Software8.2.2.12
CiscoAdaptive Security Appliance Software8.2.2.16
CiscoAdaptive Security Appliance Software8.2.2.17
CiscoAdaptive Security Appliance Software8.2.3
CiscoAdaptive Security Appliance Software8.2.4
CiscoAdaptive Security Appliance Software8.2.4.1
CiscoAdaptive Security Appliance Software8.2.4.4

Showing 50 of 206 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-6431?
A vulnerability in the local Certificate Authority (CA) feature of Cisco ASA Software before 9.6(1.5) could allow an unauthenticated, remote attacker to cause a reload of the affected system. The vulnerability is due to improper handling of crafted packets during the enrollment operation. An attacker could exploit this vulnerability by sending a crafted enrollment request to the affected system. An exploit could allow the attacker to cause the reload of the affected system. Note: Only HTTPS packets directed to the Cisco ASA interface, where the local CA is allowing user enrollment, can be used to trigger this vulnerability. This vulnerability affects systems configured in routed firewall mode and in single or multiple context mode.
How severe is CVE-2016-6431?
Severity scoring for CVE-2016-6431 is pending analysis. The EPSS model estimates a 2.54% probability of exploitation in the next 30 days.
How do I fix CVE-2016-6431?
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