CVE-2025-53014: Magick.NET Q16 AnyCPU ImageMagick Has A Heap Buffer Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hm4x-r5hc-794f",
  "modified" : "2025-11-03T21:34:06Z",
  "published" : "2025-08-25T15:53:34Z",
  "aliases" : [ "CVE-2025-53014" ],
  "summary" : "ImageMagick has a Heap Buffer Overflow in InterpretImageFilename",
  "details" : "# Heap Buffer Overflow in InterpretImageFilename\n\n## Summary\nA heap buffer overflow was identified in the `InterpretImageFilename` function of ImageMagick. The issue stems from an off-by-one error that causes out-of-bounds memory access when processing format strings containing consecutive percent signs (`%%`).\n\n## Environment\n- **OS**: Arch Linux (Linux gmkhost 6.14.2-arch1-1 # 1 SMP PREEMPT_DYNAMIC Thu, 10 Apr 2025 18:43:59 +0000 x86_64 GNU/Linux (GNU libc) 2.41)\n- **Architecture**: x86_64\n- **Compiler**: gcc (GCC) 15.1.1 20250425\n\n## Reproduction\n\n### Build Instructions\n```bash\n# Clone the repository\ngit clone https://github.com/ImageMagick/ImageMagick.git\ncd ImageMagick\ngit reset --hard 8fff9b4f44d2e8b5cae2bd6db70930a144d15f12\n\n# Build with AddressSanitizer\nexport CFLAGS=\"-fsanitize=address -g -O1\"\nexport CXXFLAGS=\"-fsanitize=address -g -O1\"\nexport LDFLAGS=\"-fsanitizer=address\"\n./configure\nmake\n\n# Set library path and trigger the crash\nexport LD_LIBRARY_PATH=\"$(pwd)/MagickWand/.libs:$(pwd)/MagickCore/.libs:$LD_LIBRARY_PATH\"\n./utilities/.libs/magick %% a\n```\n\n### Minimum Trigger\n```bash\n./utilities/.libs/magick %% [any_output_filename]\n```\n\n## Crash Analysis\n\n### AddressSanitizer Output\n```\n$ ./utilities/.libs/magick %% a\n=================================================================\n==2227694==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7037f99e3ad3 at pc 0x741801e81a17 bp 0x7ffd22fa4e00 sp 0x7ffd22fa45b8\nREAD of size 1 at 0x7037f99e3ad3 thread T0\n    #0 0x741801e81a16 in strchr /usr/src/debug/gcc/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:746\n    #1 0x7418013b4f06 in InterpretImageFilename MagickCore/image.c:1674\n    #2 0x7418012826a3 in ReadImages MagickCore/constitute.c:1040\n    #3 0x741800e4696b in CLINoImageOperator MagickWand/operation.c:4959\n    #4 0x741800e64de7 in CLIOption MagickWand/operation.c:5473\n    #5 0x741800d92edf in ProcessCommandOptions MagickWand/magick-cli.c:653\n    #6 0x741800d94816 in MagickImageCommand MagickWand/magick-cli.c:1392\n    #7 0x741800d913e4 in MagickCommandGenesis MagickWand/magick-cli.c:177\n    #8 0x5ef7a3546638 in MagickMain utilities/magick.c:162\n    #9 0x5ef7a3546872 in main utilities/magick.c:193\n    #10 0x7417ff53f6b4  (/usr/lib/libc.so.6+0x276b4) (BuildId: 468e3585c794491a48ea75fceb9e4d6b1464fc35)\n    #11 0x7417ff53f768 in __libc_start_main (/usr/lib/libc.so.6+0x27768) (BuildId: 468e3585c794491a48ea75fceb9e4d6b1464fc35)\n    #12 0x5ef7a3546204 in _start (/home/kforfk/workspace/fuzz_analysis/saigen/ImageMagick/utilities/.libs/magick+0x2204) (BuildId: 96677b60628cf297eaedb3eb17b87000d29403f2)\n\n0x7037f99e3ad3 is located 0 bytes after 3-byte region [0x7037f99e3ad0,0x7037f99e3ad3)\nallocated by thread T0 here:\n    #0 0x741801f20e15 in malloc /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_malloc_linux.cpp:67\n    #1 0x7418013e86bc in AcquireMagickMemory MagickCore/memory.c:559\n\nSUMMARY: AddressSanitizer: heap-buffer-overflow MagickCore/image.c:1674 in InterpretImageFilename\nShadow bytes around the buggy address:\n  0x7037f99e3800: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa\n  0x7037f99e3880: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa\n  0x7037f99e3900: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa\n  0x7037f99e3980: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa\n  0x7037f99e3a00: fa fa 07 fa fa fa fd fa fa fa fd fa fa fa 00 04\n=>0x7037f99e3a80: fa fa 00 04 fa fa 00 00 fa fa[03]fa fa fa 03 fa\n  0x7037f99e3b00: fa fa 00 01 fa fa fa fa fa fa fa fa fa fa fa fa\n  0x7037f99e3b80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\n  0x7037f99e3c00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\n  0x7037f99e3c80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\n  0x7037f99e3d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\nShadow byte legend (one shadow byte represents 8 application bytes):\n  Addressable:           00\n  Partially addressable: 01 02 03 04 05 06 07 \n  Heap left redzone:       fa\n  Freed heap region:       fd\n  Stack left redzone:      f1\n  Stack mid redzone:       f2\n  Stack right redzone:     f3\n  Stack after return:      f5\n  Stack use after scope:   f8\n  Global redzone:          f9\n  Global init order:       f6\n  Poisoned by user:        f7\n  Container overflow:      fc\n  Array cookie:            ac\n  Intra object redzone:    bb\n  ASan internal:           fe\n  Left alloca redzone:     ca\n  Right alloca redzone:    cb\n==2227694==ABORTING\n```\n\n## Root Cause Analysis\nThe first command line argument is interpreted as `MagickImageCommand`:\nhttps://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/utilities/magick.c#L83\n```c\nconst CommandInfo\n  MagickCommands[] =\n  {\n    MagickCommandSize(\"magick\", MagickFalse, MagickImageCommand),\n```\n\nIt is invoked here:\nhttps://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L220\n```c\nstatus=command(image_info,argc,argv,&text,exception);\n```\n\nThe execution then follows this path:\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L1387\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L586\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L419\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/operation.c#L5391\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/operation.c#L5473\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/operation.c#L4959\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/constitute.c#L1009\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/constitute.c#L1039\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/image.c#L1649\n- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/image.c#L1674\n\nThe execution eventually reaches `InterpretImageFilename` and enters a loop. The `format` variable here is `\"%%\"`. At this point, it is safe to access `*(format + 2)` but not safe to access `*(format + 3)`.\n\n```c\nfor (p=strchr(format,'%'); p != (char *) NULL; p=strchr(p+1,'%'))\n{\n  q=(char *) p+1;\n  if (*q == '%')\n    {\n      p=q+1;\n      continue;\n    }\n```\n\nThe first `strchr` call returns a pointer equal to `format` and assigns it to `p`. Then `q` is initialized with `p + 1` (`format + 1`), and `*q` is `'%'`, so the code enters the if branch. Here, `p` is reassigned to `q + 1` (`format + 2`).\n\nIn the next iteration, `p + 1` (`format + 3`) is passed to `strchr`, and when `strchr` accesses it, this causes an out-of-bounds read.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
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      "name" : "Magick.NET-Q16-AnyCPU"
    },
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  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-hm4x-r5hc-794f"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-53014"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/commit/29d82726c7ec20c07c49ba263bdcea16c2618e03"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick6/commit/79b6ed03770781d996d1710b89fbb887e5ea758a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ImageMagick/ImageMagick"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dlemstra/Magick.NET/releases/tag/14.7.0"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/09/msg00012.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125", "CWE-193" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-25T15:53:34Z",
    "nvd_published_at" : "2025-07-14T18:15:23Z"
  }
}