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CVE-2019-1598— Cisco FXOS and NX-OS Lightweight Directory Access Protocol Denial of Service Vulnerabilities

Quick assessment

Affected
Cisco Firepower 4100 Series Next-Generation Firewalls
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 NX-OS Software和Cisco FXOS Software都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。 Cisco FXOS Software和Cisco NX-OS Software中的Lightweight Directory Access Protocol (LDAP)功能的实现存在输入验证漏洞，该漏洞源于程序没有正确地解析L

AI Predicted 7.5 Difficulty: Moderate EPSS 2.54% · P84

Possible ATT&CK Techniques 1 AI

T1027 · Obfuscated Files or Information
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I. Basic Information for CVE-2019-1598

Vulnerability Information
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Vulnerability Title
Cisco FXOS and NX-OS Lightweight Directory Access Protocol Denial of Service Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in the implementation of the Lightweight Directory Access Protocol (LDAP) feature in Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of LDAP packets by an affected device. An attacker could exploit these vulnerabilities by sending an LDAP packet crafted using Basic Encoding Rules (BER) to an affected device. The LDAP packet must have a source IP address of an LDAP server configured on the targeted device. A successful exploit could cause the affected device to reload, resulting in a DoS condition. Firepower 4100 Series Next-Generation Firewalls are affected in versions prior to 2.0.1.201, 2.2.2.54, and 2.3.1.75. Firepower 9300 Security Appliances are affected in versions prior to 2.0.1.201, 2.2.2.54, and 2.3.1.75. MDS 9000 Series Multilayer Switches are affected in versions prior to 8.2(1). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(1). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(2). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(20), 7.3(2)D1(1), and 8.2(1). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I7(1). UCS 6200 and 6300 Fabric Interconnect are affected in versions prior to 3.2(2b).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco NX-OS Software和Cisco FXOS Software 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software和Cisco FXOS Software都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。 Cisco FXOS Software和Cisco NX-OS Software中的Lightweight Directory Access Protocol (LDAP)功能的实现存在输入验证漏洞，该漏洞源于程序没有正确地解析L
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 Firepower 4100 Series Next-Generation Firewalls unspecified ~ 2.0.1.201 -
Cisco Firepower 9300 Security Appliance unspecified ~ 2.0.1.201 -
Cisco MDS 9000 Series Multilayer Switches unspecified ~ 8.2(1) -
Cisco Nexus 3000 Series Switches unspecified ~ 7.0(3)I7(1) -
Cisco Nexus 3500 Platform Switches unspecified ~ 7.0(3)I7(2) -
Cisco Nexus 7000 and 7700 Series Switches unspecified ~ 6.2(20) -
Cisco Nexus 9000 Series Switches in Standalone NX-OS Mode unspecified ~ 7.0(3)I7(1) -
Cisco UCS 6200 and 6300 Fabric Interconnect unspecified ~ 3.2(2b) -

II. Public POCs for CVE-2019-1598

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III. Intelligence Information for CVE-2019-1598

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Vendor Advisories for CVE-2019-1598 (2)

Same Patch Batch · Cisco · 2019-03-07 · 5 CVEs total

CVE-2019-1596 Cisco NX-OS Software Bash Shell Privilege Escalation Vulnerability
CVE-2019-1597 Cisco FXOS and NX-OS Lightweight Directory Access Protocol Denial of Service Vulnerabiliti
CVE-2019-1599 Cisco NX-OS Software Netstack Denial of Service Vulnerability
CVE-2019-1600 Cisco FXOS and NX-OS Software Unauthorized Directory Access Vulnerability

IV. Related Vulnerabilities

Same product: Firepower 4100 Series Next-Generation Firewalls
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1598

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