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CVE-2021-1493— Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Adaptive Security Appliance (ASA) Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Adaptive Security Appliance 存在安全漏洞，该漏洞源于对提供给受影响系统的web服务接口的特定数据的边界检查不足造成的。攻击者可利用该漏洞在受影响的系统上造成缓冲区溢出。

CVSS 8.5 · High EPSS 1.20% · P67
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I. Basic Information for CVE-2021-1493

Vulnerability Information
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Vulnerability Title
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Adaptive Security Appliances Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Adaptive Security Appliance 存在安全漏洞，该漏洞源于对提供给受影响系统的web服务接口的特定数据的边界检查不足造成的。攻击者可利用该漏洞在受影响的系统上造成缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Adaptive Security Appliance (ASA) Software n/a -

II. Public POCs for CVE-2021-1493

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III. Intelligence Information for CVE-2021-1493

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Vendor Advisories for CVE-2021-1493 (1)

Same Patch Batch · Cisco · 2021-04-29 · 17 CVEs total

CVE-2021-1445 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2021-1501 8.6 HIGH Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software SIP
CVE-2021-1504 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2021-1476 6.7 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Command I
CVE-2021-1488 6.7 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firep
CVE-2021-1256 6.0 MEDIUM Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability
CVE-2021-1495 5.8 MEDIUM Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability
CVE-2021-1369 5.4 MEDIUM Cisco Firepower Device Manager On-Box Software XML External Entity Vulnerability
CVE-2021-1456 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1457 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1458 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1477 4.3 MEDIUM Cisco Firepower Management Center Software Policy Vulnerability
CVE-2021-1402 Cisco Firepower Threat Defense Software SSL Decryption Policy Denial of Service Vulnerabil
CVE-2021-1448 Cisco Firepower Threat Defense Software Command Injection Vulnerability
CVE-2021-1455 Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1489 Cisco Firepower Device Manager Software Filesystem Space Exhaustion Denial of Service Vuln

IV. Related Vulnerabilities

Same product: Cisco Adaptive Security Appliance (ASA) Software
Same vendor: Cisco
Same weakness: CWE-120

V. Comments for CVE-2021-1493

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