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CVE-2021-21235— Infinite loop in parsing PNG files in

Quick assessment

Affected
kamadak exif-rs
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.

Kamadak Exif-rs是Kamadak个人开发者的一个基于Rust的用于分析Exif数据的解析库。该软件支持从 TIFF、RAW、JPEG、HEIF、HEIC、AVIF、PNG、WebP等格式中读取Exif数据。 kamadak-exif version 0.5.2 存在安全漏洞，该漏洞源于在解析精心制作的PNG文件时存在一个无限循环。

CVSS 5.7 · Medium EPSS 1.52% · P73

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21235

Vulnerability Information
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Vulnerability Title
Infinite loop in parsing PNG files in
Source: CVE Program / CVE List V5
Vulnerability Description
kamadak-exif is an exif parsing library written in pure Rust. In kamadak-exif version 0.5.2, there is an infinite loop in parsing crafted PNG files. Specifically, reader::read_from_container can cause an infinite loop when a crafted PNG file is given. This is fixed in version 0.5.3. No workaround is available. Applications that do not pass files with the PNG signature to Reader::read_from_container are not affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Kamadak Exif-rs 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kamadak Exif-rs是Kamadak个人开发者的一个基于Rust的用于分析Exif数据的解析库。该软件支持从 TIFF、RAW、JPEG、HEIF、HEIC、AVIF、PNG、WebP等格式中读取Exif数据。 kamadak-exif version 0.5.2 存在安全漏洞，该漏洞源于在解析精心制作的PNG文件时存在一个无限循环。
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
kamadak exif-rs = 0.5.2 -

II. Public POCs for CVE-2021-21235

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III. Intelligence Information for CVE-2021-21235

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Patches & Fixes for CVE-2021-21235 (1)

Vendor Advisories for CVE-2021-21235 (1)

Other References for CVE-2021-21235 (1)

IV. Related Vulnerabilities

Same weakness: CWE-400

V. Comments for CVE-2021-21235

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