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CVE-2021-1493

HIGHCVSS 7.1/10EPSS 1.20%

Last modified

CVE-2021-1493 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to insufficient boundary checks for specific data that is provided to the web services interface of an affected system. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to insufficient boundary checks for specific data that is provided to the web services interface of an affected system. An attacker could exploit this vulnerability by sending a malicious HTTP request. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system, which could disclose data fragments or cause the device to reload, resulting in a denial of service (DoS) condition.

Metrics

CVSS 3.1
7.1/10

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

EPSS Probability
1.20%

64.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense< 6.4.0.12
CiscoFirepower Threat Defense>= 6.5.0, < 6.6.3
CiscoFirepower Threat Defense>= 6.7.0, < 6.7.0.1
CiscoAdaptive Security Appliance Software>= 9.8, < 9.8.4.34
CiscoAdaptive Security Appliance Software>= 9.9, < 9.9.2.85
CiscoAdaptive Security Appliance Software>= 9.10, < 9.12.4.13
CiscoAdaptive Security Appliance Software>= 9.13, < 9.13.1.21
CiscoAdaptive Security Appliance Software>= 9.14, < 9.14.2.8
CiscoAdaptive Security Appliance Software>= 9.15, < 9.15.1.7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-1493?
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to insufficient boundary checks for specific data that is provided to the web services interface of an affected system. An attacker could exploit this vulnerability by sending a malicious HTTP request. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system, which could disclose data fragments or cause the device to reload, resulting in a denial of service (DoS) condition.
How severe is CVE-2021-1493?
CVE-2021-1493 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1493?
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-2021-1493?

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

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Source: NVD / NIST