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CVE-2024-21909— Denial of service in CBOR library

Quick assessment

Affected
CVE-2024-21909
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.

CBOR是Peter Occil个人开发者的一个简明二进制对象表示的 C实现。 CBOR 4.0.0 到 4.5.0版本存在安全漏洞，该漏洞源于使用低效算法，当恶意制作的输入传递到该库或该库中的其他 CBOR 解码机制时，很容易受到拒绝服务攻击。

AI Predicted 7.5 Difficulty: Easy EPSS 1.06% · P65

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
None None 4.0.0< 4.5.1 affected

I. Basic Information for CVE-2024-21909

Vulnerability Information
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Vulnerability Title
Denial of service in CBOR library
Source: CVE Program / CVE List V5
Vulnerability Description
PeterO.Cbor versions 4.0.0 through 4.5.0 are vulnerable to a denial of service vulnerability. An attacker may trigger the denial of service condition by providing crafted data to the DecodeFromBytes or other decoding mechanisms in PeterO.Cbor. Depending on the usage of the library, an unauthenticated and remote attacker may be able to cause the denial of service condition.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
算法复杂性
Source: CVE Program / CVE List V5
Vulnerability Title
CBOR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CBOR是Peter Occil个人开发者的一个简明二进制对象表示的 C# 实现。 CBOR 4.0.0 到 4.5.0版本存在安全漏洞，该漏洞源于使用低效算法，当恶意制作的输入传递到该库或该库中的其他 CBOR 解码机制时，很容易受到拒绝服务攻击。
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
- - 4.0.0 ~ 4.5.1 -

II. Public POCs for CVE-2024-21909

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2024-21909

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Patches & Fixes for CVE-2024-21909 (1)

Vendor Advisories for CVE-2024-21909 (1)

Other References for CVE-2024-21909 (1)

IV. Related Vulnerabilities

Same weakness: CWE-407