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CVE-2020-4355

Quick assessment

Affected
IBM DB2 for Linux- UNIX and Windows
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.

IBM DB2是美国国际商业机器（IBM）公司的一套关系型数据库管理系统。该系统的执行环境主要有UNIX、Linux、IBMi、z/OS以及Windows服务器版本。 IBM DB2 存在资源管理错误漏洞，该漏洞源于程序没有正确处理安全套接字层（SSL）重新协商请求。远程攻击者可借助特制请求利用该漏洞占用大量资源。以下产品及版本受到影响：IBM DB2 V9.7版本，V10.1版本，V10.5版本，V11.1版本，V11.5版本。

AI Predicted 5.3 Difficulty: Easy EPSS 2.16% · P82

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-4355

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
IBM DB2 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM DB2是美国国际商业机器（IBM）公司的一套关系型数据库管理系统。该系统的执行环境主要有UNIX、Linux、IBMi、z/OS以及Windows服务器版本。 IBM DB2 存在资源管理错误漏洞，该漏洞源于程序没有正确处理安全套接字层（SSL）重新协商请求。远程攻击者可借助特制请求利用该漏洞占用大量资源。以下产品及版本受到影响：IBM DB2 V9.7版本，V10.1版本，V10.5版本，V11.1版本，V11.5版本。
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
IBM DB2 for Linux- UNIX and Windows 9.7 -

II. Public POCs for CVE-2020-4355

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III. Intelligence Information for CVE-2020-4355

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Same Patch Batch · IBM · 2020-07-01 · 11 CVEs total

CVE-2020-4420 IBM DB2 安全漏洞
CVE-2020-4387 IBM DB2 竞争条件问题漏洞
CVE-2020-4414 IBM DB2 安全漏洞
CVE-2020-4376 IBM MQ 安全漏洞
CVE-2020-4386 IBM DB2 竞争条件问题漏洞
CVE-2019-4706 IBM Security Identity Manager Virtual Appliance 日志信息泄露漏洞
CVE-2020-4363 IBM DB2 缓冲区错误漏洞
CVE-2019-4704 IBM Security Identity Manager Virtual Appliance 安全漏洞
CVE-2019-4705 IBM Security Identity Manager Virtual Appliance 信息泄露漏洞
CVE-2019-4676 IBM Security Identity Manager Virtual Appliance 安全漏洞

IV. Related Vulnerabilities

Same product: DB2 for Linux- UNIX and Windows
Same vendor: IBM

V. Comments for CVE-2020-4355

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