CVE-2020-27752: 
ImageMagick vulnerability analysis and mitigation

A heap-based buffer overflow vulnerability was discovered in ImageMagick's MagickCore/quantum-private.h file, specifically in the PopShortPixel function. This vulnerability was identified as CVE-2020-27752 and affects ImageMagick versions prior to 7.0.9-0. The flaw was discovered by Suhwan Song from Seoul National University (RedHat Bugzilla).

The vulnerability is a heap-based buffer overflow that occurs in the PopShortPixel function located in MagickCore/quantum-private.h at line 227. This issue emerged as an incomplete fix for a previous vulnerability (CVE-2020-25664), where the original patch did not fully address the underlying buffer overflow problem (RedHat Bugzilla).

An attacker who submits a crafted file that is processed by ImageMagick could trigger a heap-based buffer overflow, potentially leading to code execution or system crashes (NVD).

The vulnerability requires an attacker to submit a specially crafted file for processing by ImageMagick. No known exploits were available in the wild at the time of disclosure (ManageEngine).

The vulnerability was fixed in ImageMagick version 7.0.9-0. Users should upgrade to this version or later to mitigate the risk. The fix was implemented through a patch that properly handles buffer operations in the PopShortPixel function (RedHat Bugzilla).