ImageMagick's failure to limit the depth of SVG file reads caused a DoS attack
Summary
Using Magick to read a malicious SVG file resulted in a DoS attack.
Details
bt obtained using gdb:
#4 0x0000555555794c9c in ResizeMagickMemory (memory=0x7fffee203800, size=391344) at MagickCore/memory.c:1443
#5 0x0000555555794e5a in ResizeQuantumMemory (memory=0x7fffee203800, count=48918, quantum=8)
at MagickCore/memory.c:1508
#6 0x0000555555acc8ed in SVGStartElement (context=0x517000000080, name=0x5190000055e3 "g", attributes=0x0)
at coders/svg.c:1254
#7 0x00007ffff6799b1c in xmlParseStartTag () at /lib/x86_64-linux-gnu/libxml2.so.2
#8 0x00007ffff68c7bb8 in () at /lib/x86_64-linux-gnu/libxml2.so.2
#9 0x00007ffff67a03f1 in xmlParseChunk () at /lib/x86_64-linux-gnu/libxml2.so.2This is related to the SVGStartElement and ResizeQuantumMemory functions.
PoC
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Generate an SVG file
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Read this file using Magick:
./magick /data/ylwang/Tools/LargeScan/targets/ImageMagick/test++/1.svg null- Causes a DoS Attack
My server has a large amount of memory, causing a stack overflow to take a long time. I'll use the Windows release version as an example:
PS C:\Program Files\ImageMagick-7.1.2-Q8> .\magick.exe -ping 1.svg null:
PS C:\Program Files\ImageMagick-7.1.2-Q8> echo $LASTEXITCODE
-1073741571The error code -1073741571 indicates a crash due to a stack overflow.
Impact
This is a DoS vulnerability and all applications using Magick to parse SVG files are affected.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | Magick.NET-Q16-AnyCPU | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-arm64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-AnyCPU | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-arm64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-OpenMP-arm64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-OpenMP-x64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-x64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-x86 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-OpenMP-arm64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-OpenMP-x64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-x64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q16-x86 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q8-AnyCPU | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q8-arm64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q8-OpenMP-arm64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q8-OpenMP-x64 | < 14.10.1 | 14.10.1 |
| .NET (NuGet) | Magick.NET-Q8-x86 | < 14.10.1 | 14.10.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Weakness (CWE)
CWE-674- Platform
- .NET (NuGet)
- Package
Magick.NET-Q16-AnyCPU, Magick.NET-Q16-arm64, Magick.NET-Q16-HDRI-AnyCPU- Disclosed
- 30.12.2025
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-p27m-hp98-6637 - CC BY 4.0
Vulnerability history: Magick.NET-Q16-HDRI-x64
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 160
- First → latest
- 07.2025 09.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 24
- Medium 96
- Low 40
Disclosures per year
- 2025: 14
- 2026: 146
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ImageMagick's failure to limit the depth of SVG file reads caused a DoS attack this entry
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