Validate base color space of Indexed color spaces.
Change-Id: I2c1dbf4fe08396130d2fcecd70e175233316579b
Reviewed-on: https://pdfium-review.googlesource.com/21430
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
diff --git a/core/fpdfapi/page/cpdf_colorspace.cpp b/core/fpdfapi/page/cpdf_colorspace.cpp
index 89d5285..ea61c18 100644
--- a/core/fpdfapi/page/cpdf_colorspace.cpp
+++ b/core/fpdfapi/page/cpdf_colorspace.cpp
@@ -1015,6 +1015,12 @@
if (!m_pBaseCS)
return false;
+ // The base color space cannot be a Pattern or Indexed space, according to the
+ // PDF 1.7 spec, page 263.
+ if (m_pBaseCS->GetFamily() == PDFCS_INDEXED ||
+ m_pBaseCS->GetFamily() == PDFCS_PATTERN)
+ return false;
+
m_pCountedBaseCS = pDocPageData->FindColorSpacePtr(m_pBaseCS->GetArray());
m_nBaseComponents = m_pBaseCS->CountComponents();
m_pCompMinMax = FX_Alloc2D(float, m_nBaseComponents, 2);