CyberRota Analysis
AI-GeneratedVersions of Imager prior to 1.034 for Perl are vulnerable to a heap over-read due to improper handling of zero-count ASCII EXIF entries in the copy_string_tags() function. This flaw can lead to the exposure of adjacent heap memory when processing attacker-supplied images, potentially revealing sensitive data. Developers and organizations utilizing Imager for image processing should prioritize upgrading to the latest version 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
Imager versions from 0.45_02 before 1.034 for Perl may expose adjacent heap bytes via strlen() over-read from zero-count ASCII EXIF entries in copy_string_tags. copy_string_tags() computes an ASCII EXIF tag's length as `entry->size - 1` to strip the trailing NUL. A zero-count ASCII entry sets `entry->size` to 0, and the derived length reaches i_tags_add() as -1, which is interpreted as a request to call strlen(), scanning past the entry to the next NUL and copying those bytes into the tag. JPEG reaches this path via im_decode_exif(), as does the separate Imager::File::WEBP distribution, which is fixed by upgrading Imager. Any caller of Imager->read() on an attacker-supplied image with such an entry may receive an exif_* tag holding adjacent heap bytes instead of an empty string.