ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp

Summary When decoding a fax-compressed strip TIFF Compression=3 / Group 3 1D, or Compression=2 / Modified Huffman, the CCITT decompressors write decoded runs through BitWriterUtils.WriteBits/WriteBit/WriteZeroBit, which advance and write bits via Unsafe.Add with read-modify-write semantics —...

GHSA-JJ3Q-CWQJ-842R ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp

Summary When decoding a fax-compressed strip TIFF Compression=3 / Group 3 1D, or Compression=2 / Modified Huffman, the CCITT decompressors write decoded runs through BitWriterUtils.WriteBits/WriteBit/WriteZeroBit, which advance and write bits via Unsafe.Add with read-modify-write semantics —...

CVE-2026-106117 ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp

ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized...

CVE-2026-106117

The SixLabors.ImageSharp 2D graphics library (versions 3.0.0 through 4.1.1 ) is vulnerable to a heap out-of-bounds (OOB) write during the decoding of strip TIFF images using CCITT Group 3 or Modified Huffman compression. The root cause is that T4TiffCompression.WritePixelRun can accumulate oversi...

CVE-2026-106117 ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp

ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized...

CVE-2026-106117 ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp

ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized...

EUVD-2015-8107

Malware in sbrugna...

EUVD-2017-12152

Malware in sbrugna...

SUSE CVE-2005-3624

The CCITTFaxStream::CCITTFaxStream function in Stream.cc for xpdf, gpdf, kpdf, pdftohtml, poppler, teTeX, CUPS, libextractor, and others allows attackers to corrupt the heap via negative or large integers in a CCITTFaxDecode stream, which lead to integer overflows and integer underflows...

SUSE CVE-2007-5393

Heap-based buffer overflow in the CCITTFaxStream::lookChar method in xpdf/Stream.cc in Xpdf 3.02p11 allows remote attackers to execute arbitrary code via a PDF file that contains a crafted CCITTFaxDecode filter...

SUSE CVE-2013-1790

poppler/Stream.cc in poppler before 0.22.1 allows context-dependent attackers to have an unspecified impact via vectors that trigger a read of uninitialized memory by the CCITTFaxStream::lookChar function...

Modesty Pdf2json Buffer Error Vulnerability

PDF2JSON is a conversion library based on XPDF 3.02 that can be used to convert PDF pages page by page to JSON and XML formats. A denial of service vulnerability exists in the CCITTFaxStream::lookChar function in PDF2JSON version 0.70. The vulnerability stems from an invalid write of size 2. An...

Xpdf 'CCITTFaxStream::readRow()' function stack buffer overflow vulnerability

Xpdf is Foo Labs developed an open source PDF reader , it supports decoding LZW compressed format files and read encrypted PDF files . A stack buffer overflow vulnerability exists in the 'CCITTFaxStream::readRow' function in the Stream.cc file in Xpdf version 4.00. A remote attacker can exploit...

UBUNTU-CVE-2018-18454

CCITTFaxStream::readRow in Stream.cc in Xpdf 4.00 allows remote attackers to cause a denial of service heap-based buffer over-read via a crafted pdf file, as demonstrated by pdftoppm...

PT-2018-14468 · Xpdf +2 · Xpdf +2

Name of the Vulnerable Software and Affected Versions: Xpdf version 4.00 Description: The issue allows remote attackers to cause a denial of service, specifically a heap-based buffer over-read, via a crafted pdf file. This is demonstrated by the use of pdftoppm, which exploits the...

CVE-2017-3011

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable integer overflow vulnerability in the CCITT fax PDF filter. Successful exploitation could lead to arbitrary code execution...

Integer overflow

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable integer overflow vulnerability in the CCITT fax PDF filter. Successful exploitation could lead to arbitrary code execution...

CVE-2017-3011

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable integer overflow vulnerability in the CCITT fax PDF filter. Successful exploitation could lead to arbitrary code execution...

CVE-2017-3011: Integer Overflow or Wraparound

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable integer overflow vulnerability in the CCITT fax PDF filter. Successful exploitation could lead to arbitrary code execution...

PT-2017-1864

Name of the Vulnerable Software and Affected Versions Adobe Acrobat Reader versions 11.0.19 and earlier Adobe Acrobat Reader versions 15.006.30280 and earlier Adobe Acrobat Reader versions 15.023.20070 and earlier Description The issue is related to an integer overflow vulnerability in the CCITT...