CVE-2020-25674

描述

WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times, attempting to pass invalid colormap data to the event logger. The patch replaces the hardcoded 256 value with a call to MagickMin() to ensure the proper value is used. This could impact application availability when a specially crafted input file is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.

如何修補 CVE-2020-25674

要修補 CVE-2020-25674,請將受影響套件升級到下列已修補版本。

• —升級至 8:6.9.11.24+dfsg-1 或更新版本

CVE-2020-25674 正在被利用嗎?

低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 8:6.9.11.24+dfsg-1

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-25674