[Pkg-gmagick-im-team] Bug#1118340: imagemagick: CVE-2025-62171

[Salvatore Bonaccorso]

Source: imagemagick
Version: 8:7.1.2.3+dfsg1-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for imagemagick.

CVE-2025-62171[0]:
| ImageMagick is an open source software suite for displaying,
| converting, and editing raster image files. In ImageMagick versions
| prior to 7.1.2-7 and 6.9.13-32, an integer overflow vulnerability
| exists in the BMP decoder on 32-bit systems. The vulnerability
| occurs in coders/bmp.c when calculating the extent value by
| multiplying image columns by bits per pixel. On 32-bit systems with
| size_t of 4 bytes, a malicious BMP file with specific dimensions can
| cause this multiplication to overflow and wrap to zero. The overflow
| check added to address CVE-2025-57803 is placed after the overflow
| occurs, making it ineffective. A specially crafted 58-byte BMP file
| with width set to 536,870,912 and 32 bits per pixel can trigger this
| overflow, causing the bytes_per_line calculation to become zero.
| This vulnerability only affects 32-bit builds of ImageMagick where
| default resource limits for width, height, and area have been
| manually increased beyond their defaults. 64-bit systems with size_t
| of 8 bytes are not vulnerable, and systems using default ImageMagick
| resource limits are not vulnerable. The vulnerability is fixed in
| versions 7.1.2-7 and 6.9.13-32.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-62171
    https://www.cve.org/CVERecord?id=CVE-2025-62171
[1] https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-9pp9-cfwx-54rm
[2] https://github.com/ImageMagick/ImageMagick/commit/cea1693e2ded51b4cc91c70c54096cbed1691c00
[3] https://github.com/ImageMagick/ImageMagick6/commit/456771fae8baa9558a1421ec8d522e6937d9b2d7

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore