CyberRota Analysis
AI-GeneratedThe ExifReader library in JavaScript versions prior to 4.41.1 is vulnerable to a denial-of-service attack due to improper handling of HEIC or AVIF files, allowing attackers to exploit the parser's allocation of memory based on untrusted input. This can lead to significant heap growth or system memory exhaustion, potentially crashing Node.js processes and disrupting web, desktop, or mobile applications that rely on image parsing. Organizations using affected versions should prioritize upgrading to version 4.41.1 to mitigate this high-severity vulnerability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
ExifReader is a JavaScript Exif information parser. Prior to 4.41.1, ExifReader parses attacker-controlled HEIC or AVIF ISO-BMFF files in getItems() within src/image-header-iso-bmff-iloc.js and trusts iloc itemCount and extentCount values while allocating an extent object for every nested-loop iteration. When offsetSize, lengthSize, baseOffsetSize, and indexSize are zero, the extent fields consume no input bytes and the buffer offset does not advance, but the parser can still allocate up to itemCount multiplied by extentCount objects without an allocation budget. A small malicious iloc box can therefore cause hundreds of megabytes of heap growth or exhaust system memory, terminating a Node.js process and denying service to web, desktop, or mobile applications that parse untrusted images. The zero field widths are valid ISO-BMFF values indicating absent fields, so the vulnerable parser must bound work rather than relying on offset advancement. The issue is fixed in version 4.41.1.