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CVE-2021-43045— Possible DOS vulnerabilities in C# Avro SDK

Quick assessment

Affected
Apache Software Foundation Apache Avro
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.

Apache Avro是美国阿帕奇（Apache）基金会的一个数据序列化系统。为 Apache Hadoop 提供数据序列化和数据交换服务。 Apache Avro 中存在资源管理错误漏洞，该漏洞源于产品的.net SDK组件未对分配资源量进行有效限制。攻击者可通过该漏洞分配过多资源导致拒绝服务。以下产品及版本受到影响： Apache Avro 1.10.2 版本及之前版本。

AI Predicted 5.3 Difficulty: Moderate EPSS 2.96% · P86

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-43045

Vulnerability Information
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Vulnerability Title
Possible DOS vulnerabilities in C# Avro SDK
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the .NET SDK of Apache Avro allows an attacker to allocate excessive resources, potentially causing a denial-of-service attack. This issue affects .NET applications using Apache Avro version 1.10.2 and prior versions. Users should update to version 1.11.0 which addresses this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Avro 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Avro是美国阿帕奇（Apache）基金会的一个数据序列化系统。为 Apache Hadoop 提供数据序列化和数据交换服务。 Apache Avro 中存在资源管理错误漏洞，该漏洞源于产品的.net SDK组件未对分配资源量进行有效限制。攻击者可通过该漏洞分配过多资源导致拒绝服务。以下产品及版本受到影响： Apache Avro 1.10.2 版本及之前版本。
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
Apache Software Foundation Apache Avro Apache Avro ~ 1.10.2 -

II. Public POCs for CVE-2021-43045

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III. Intelligence Information for CVE-2021-43045

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Mailing List Discussions for CVE-2021-43045 (1)

Same Patch Batch · Apache Software Foundation · 2022-01-06 · 10 CVEs total

CVE-2021-45458 Hardcoded credentials
CVE-2021-45457 Overly broad CORS configuration
CVE-2021-45456 Command injection
CVE-2021-36774 Mysql JDBC Connector Deserialize RCE
CVE-2021-31522 Apache Kylin unsafe class loading
CVE-2021-27738 Improper Access Control to Streaming Coordinator & SSRF
CVE-2021-36739 XSS vulnerability in the MVCBean JSP portlet maven archetype
CVE-2021-36738 XSS vulnerability in the JSP version of the Apache Pluto Applicant MVCBean CDI portlet
CVE-2021-36737 XSS in V3 Demo Portlet

IV. Related Vulnerabilities

Same product: Apache Avro
Same vendor: Apache Software Foundation
Same weakness: CWE-770

V. Comments for CVE-2021-43045

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