RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 05:27:46 +00:00
Code Issues Activity Actions

LibGfx/TIFF: Prevent the CCITT decoder to run on non bilevel image

Browse source
This commit is contained in:
Lucas CHOLLET 2024-01-09 17:57:30 -05:00 • committed by Andreas Kling
parent 0ef449a588
commit f6b86096a5
1 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/Libraries/LibGfx/ImageFormats/TIFFLoader.cpp
View file

@ -270,8 +270,12 @@ private:
break;
}
case Compression::CCITT: {
// Section 8: Baseline Field Reference Guide
// BitsPerSample must be 1, since this type of compression is defined only for bilevel images.
if (m_metadata.bits_per_sample()->size() > 1)
return Error::from_string_literal("TIFFImageDecoderPlugin: CCITT image with BitsPerSample greater than one, aborting...");
return Error::from_string_literal("TIFFImageDecoderPlugin: CCITT image with BitsPerSample greater than one");
if (m_metadata.photometric_interpretation() != PhotometricInterpretation::WhiteIsZero && m_metadata.photometric_interpretation() != PhotometricInterpretation::BlackIsZero)
return Error::from_string_literal("TIFFImageDecoderPlugin: CCITT compression is used on a non bilevel image");
ByteBuffer decoded_bytes {};
auto decode_ccitt_1D_strip = [&](u32 num_bytes) -> ErrorOr<ReadonlyBytes> {