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CVE-2024-42358— Loop with Unreachable Exit Condition ('Infinite Loop') in pdfio

Quick assessment

Affected
michaelrsweet pdfio
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.

PDFio是Michael R Sweet个人开发者的一个简单的 C 库，用于读取和写入 PDF 文件。 PDFio 1.3.0版本及之前版本存在安全漏洞，该漏洞源于TTF解析器中存在拒绝服务漏洞，允许程序使用100%的内存并进入无限循环来导致堆缓冲区溢出漏洞。

CVSS 6.2 · Medium EPSS 0.32% · P23
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I. Basic Information for CVE-2024-42358

Vulnerability Information
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Vulnerability Title
Loop with Unreachable Exit Condition ('Infinite Loop') in pdfio
Source: CVE Program / CVE List V5
Vulnerability Description
PDFio is a simple C library for reading and writing PDF files. There is a denial of service (DOS) vulnerability in the TTF parser. Maliciously crafted TTF files can cause the program to utilize 100% of the Memory and enter an infinite loop. This can also lead to a heap-buffer-overflow vulnerability. An infinite loop occurs in the read_camp function by nGroups value. The ttf.h library is vulnerable. A value called nGroups is extracted from the file, and by changing that value, you can cause the program to utilize 100% of the Memory and enter an infinite loop. If the value of nGroups in the file is small, an infinite loop will not occur. This library, whether used as a standalone binary or as part of another application, is vulnerable to DOS attacks when parsing certain types of files. Automated systems, including web servers that use this code to convert PDF submissions into plaintext, can be DOSed if an attacker uploads a malicious TTF file. This issue has been addressed in release version 1.3.1. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
PDFio 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PDFio是Michael R Sweet个人开发者的一个简单的 C 库，用于读取和写入 PDF 文件。 PDFio 1.3.0版本及之前版本存在安全漏洞，该漏洞源于TTF解析器中存在拒绝服务漏洞，允许程序使用100%的内存并进入无限循环来导致堆缓冲区溢出漏洞。
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
michaelrsweet pdfio < 1.3.1 -

II. Public POCs for CVE-2024-42358

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III. Intelligence Information for CVE-2024-42358

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Patches & Fixes for CVE-2024-42358 (1)

IV. Related Vulnerabilities

Same product: pdfio
Same vendor: michaelrsweet
Same weakness: CWE-835

V. Comments for CVE-2024-42358

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