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CVE-2019-1693

MEDIUMCVSS 6.5/10EPSS 2.07%

Last modified

CVE-2019-1693 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the WebVPN service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper management of authenticated sessions in the WebVPN portal. EPSS estimates a 2.07% chance of exploitation in the next 30 days.

Description

A vulnerability in the WebVPN service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper management of authenticated sessions in the WebVPN portal. An attacker could exploit this vulnerability by authenticating with valid credentials and accessing a specific URL in the WebVPN portal. A successful exploit could allow the attacker to cause the device to reload, resulting in a temporary DoS condition.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
2.07%

79.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance Software< 9.4.4.34
CiscoAdaptive Security Appliance Software>= 9.5, < 9.6.4.25
CiscoAdaptive Security Appliance Software>= 9.7, < 9.8.4
CiscoAdaptive Security Appliance Software>= 9.9, < 9.9.2.50
CiscoAdaptive Security Appliance Software>= 9.10, < 9.10.1.17
CiscoFirepower Threat Defense>= 6.2.1, < 6.2.3.12
CiscoFirepower Threat Defense>= 6.3.0, < 6.3.0.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1693?
A vulnerability in the WebVPN service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper management of authenticated sessions in the WebVPN portal. An attacker could exploit this vulnerability by authenticating with valid credentials and accessing a specific URL in the WebVPN portal. A successful exploit could allow the attacker to cause the device to reload, resulting in a temporary DoS condition.
How severe is CVE-2019-1693?
CVE-2019-1693 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.07% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1693?
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.

Are you affected by CVE-2019-1693?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST