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CVE-2020-4068— Heap-based Buffer Overflow in APNSwift

Quick assessment

Affected
kylebrowning APNSwift
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.

APNSwift是美国Kyle Browning软件开发者的一款非阻塞的Swift模块，它主要用于将远程Apple Push Notification请求发送到基于Http/2 SwiftNIO构建的APNS（苹果推送通知服务）。 APNSwift 1.0.0版本中存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。

CVSS 6.3 · Medium EPSS 1.32% · P71

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-4068

Vulnerability Information
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Vulnerability Title
Heap-based Buffer Overflow in APNSwift
Source: CVE Program / CVE List V5
Vulnerability Description
In APNSwift 1.0.0, calling APNSwiftSigner.sign(digest:) is likely to result in a heap buffer overflow. This has been fixed in 1.0.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
APNSwift 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
APNSwift是美国Kyle Browning软件开发者的一款非阻塞的Swift模块，它主要用于将远程Apple Push Notification请求发送到基于Http/2 SwiftNIO构建的APNS（苹果推送通知服务）。 APNSwift 1.0.0版本中存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
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
kylebrowning APNSwift = 1.0.0 -

II. Public POCs for CVE-2020-4068

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III. Intelligence Information for CVE-2020-4068

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Patches & Fixes for CVE-2020-4068 (2)

Vendor Advisories for CVE-2020-4068 (1)

Other References for CVE-2020-4068 (1)

IV. Related Vulnerabilities

Same weakness: CWE-122