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poppler.10689
CVE-2019-10871.patch
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File CVE-2019-10871.patch of Package poppler.10689
From 406da0f6e211a74149ee7b6e953af4b4f423e4fb Mon Sep 17 00:00:00 2001 From: Marek Kasik <mkasik@redhat.com> Date: Tue, 30 Apr 2019 18:47:44 +0200 Subject: [PATCH] PSOutputDev: Don't read outside of image buffer Check whether input image is RGB or BGR to not treat it as CMYK in those cases in PSOutputDev::checkPageSlice(). Fixes #751 --- poppler/PSOutputDev.cc | 248 ++++++++++++++++++++++++++++++++--------- 1 file changed, 196 insertions(+), 52 deletions(-) diff --git a/poppler/PSOutputDev.cc b/poppler/PSOutputDev.cc index 0d2018355..155a8cbea 100644 --- a/poppler/PSOutputDev.cc +++ b/poppler/PSOutputDev.cc @@ -3374,6 +3374,14 @@ bool PSOutputDev::checkPageSlice(Page *page, double /*hDPI*/, double /*vDPI*/, } break; case psLevel1Sep: + GfxColor inputColor; + GfxCMYK cmyk; + unsigned char cmykColor[4]; + GfxDeviceRGBColorSpace *rgbCS; + SplashColorMode colorMode; + + colorMode = bitmap->getMode(); + p = bitmap->getDataPtr(); // Check for an all gray image if (getOptimizeColorSpace()) { @@ -3448,65 +3456,201 @@ bool PSOutputDev::checkPageSlice(Page *page, double /*hDPI*/, double /*vDPI*/, } } else if (((psProcessCyan | psProcessMagenta | psProcessYellow | psProcessBlack) & ~processColors) != 0) { // Color image, need to check color flags for each dot - for (y = 0; y < h; ++y) { - for (comp = 0; comp < 4; ++comp) { - if (useBinary) { - // Binary color image - for (x = 0; x < w; ++x) { - col[comp] |= p[4*x + comp]; - hexBuf[i++] = p[4*x + comp]; - if (i >= 64) { - writePSBuf(hexBuf, i); - i = 0; + switch (colorMode) { + case splashModeRGB8: + case splashModeBGR8: + rgbCS = new GfxDeviceRGBColorSpace(); + for (y = 0; y < h; ++y) { + for (comp = 0; comp < 4; ++comp) { + if (useBinary) { + // Binary color image + for (x = 0; x < w; ++x) { + if (likely(colorMode == splashModeRGB8)) { + inputColor.c[0] = byteToCol(p[3*x + 0]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 2]); + } else { + inputColor.c[0] = byteToCol(p[3*x + 2]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 0]); + } + rgbCS->getCMYK(&inputColor, &cmyk); + cmykColor[0] = colToByte(cmyk.c); + cmykColor[1] = colToByte(cmyk.m); + cmykColor[2] = colToByte(cmyk.y); + cmykColor[3] = colToByte(cmyk.k); + + col[comp] |= cmykColor[comp]; + hexBuf[i++] = cmykColor[comp]; + if (i >= 64) { + writePSBuf(hexBuf, i); + i = 0; + } + } + } else { + // Gray color image + for (x = 0; x < w; ++x) { + if (likely(colorMode == splashModeRGB8)) { + inputColor.c[0] = byteToCol(p[3*x + 0]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 2]); + } else { + inputColor.c[0] = byteToCol(p[3*x + 2]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 0]); + } + rgbCS->getCMYK(&inputColor, &cmyk); + cmykColor[0] = colToByte(cmyk.c); + cmykColor[1] = colToByte(cmyk.m); + cmykColor[2] = colToByte(cmyk.y); + cmykColor[3] = colToByte(cmyk.k); + + col[comp] |= cmykColor[comp]; + digit = cmykColor[comp] / 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + digit = cmykColor[comp] % 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + if (i >= 64) { + hexBuf[i++] = '\n'; + writePSBuf(hexBuf, i); + i = 0; + } + } } - } - } else { - // Gray color image - for (x = 0; x < w; ++x) { - col[comp] |= p[4*x + comp]; - digit = p[4*x + comp] / 16; - hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); - digit = p[4*x + comp] % 16; - hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); - if (i >= 64) { - hexBuf[i++] = '\n'; - writePSBuf(hexBuf, i); - i = 0; + } + p -= bitmap->getRowSize(); + } + delete rgbCS; + break; + default: + for (y = 0; y < h; ++y) { + for (comp = 0; comp < 4; ++comp) { + if (useBinary) { + // Binary color image + for (x = 0; x < w; ++x) { + col[comp] |= p[4*x + comp]; + hexBuf[i++] = p[4*x + comp]; + if (i >= 64) { + writePSBuf(hexBuf, i); + i = 0; + } + } + } else { + // Gray color image + for (x = 0; x < w; ++x) { + col[comp] |= p[4*x + comp]; + digit = p[4*x + comp] / 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + digit = p[4*x + comp] % 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + if (i >= 64) { + hexBuf[i++] = '\n'; + writePSBuf(hexBuf, i); + i = 0; + } + } } - } - } - } - p -= bitmap->getRowSize(); + } + p -= bitmap->getRowSize(); + } + break; } } else { // Color image, do not need to check color flags - for (y = 0; y < h; ++y) { - for (comp = 0; comp < 4; ++comp) { - if (useBinary) { - // Binary color image - for (x = 0; x < w; ++x) { - hexBuf[i++] = p[4*x + comp]; - if (i >= 64) { - writePSBuf(hexBuf, i); - i = 0; + switch (colorMode) { + case splashModeRGB8: + case splashModeBGR8: + rgbCS = new GfxDeviceRGBColorSpace(); + for (y = 0; y < h; ++y) { + for (comp = 0; comp < 4; ++comp) { + if (useBinary) { + // Binary color image + for (x = 0; x < w; ++x) { + if (likely(colorMode == splashModeRGB8)) { + inputColor.c[0] = byteToCol(p[3*x + 0]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 2]); + } else { + inputColor.c[0] = byteToCol(p[3*x + 2]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 0]); + } + rgbCS->getCMYK(&inputColor, &cmyk); + cmykColor[0] = colToByte(cmyk.c); + cmykColor[1] = colToByte(cmyk.m); + cmykColor[2] = colToByte(cmyk.y); + cmykColor[3] = colToByte(cmyk.k); + + hexBuf[i++] = cmykColor[comp]; + if (i >= 64) { + writePSBuf(hexBuf, i); + i = 0; + } + } + } else { + // Hex color image + for (x = 0; x < w; ++x) { + if (likely(colorMode == splashModeRGB8)) { + inputColor.c[0] = byteToCol(p[3*x + 0]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 2]); + } else { + inputColor.c[0] = byteToCol(p[3*x + 2]); + inputColor.c[1] = byteToCol(p[3*x + 1]); + inputColor.c[2] = byteToCol(p[3*x + 0]); + } + rgbCS->getCMYK(&inputColor, &cmyk); + cmykColor[0] = colToByte(cmyk.c); + cmykColor[1] = colToByte(cmyk.m); + cmykColor[2] = colToByte(cmyk.y); + cmykColor[3] = colToByte(cmyk.k); + + digit = cmykColor[comp] / 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + digit = cmykColor[comp] % 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + if (i >= 64) { + hexBuf[i++] = '\n'; + writePSBuf(hexBuf, i); + i = 0; + } + } } - } - } else { - // Hex color image - for (x = 0; x < w; ++x) { - digit = p[4*x + comp] / 16; - hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); - digit = p[4*x + comp] % 16; - hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); - if (i >= 64) { - hexBuf[i++] = '\n'; - writePSBuf(hexBuf, i); - i = 0; + } + p -= bitmap->getRowSize(); + } + delete rgbCS; + break; + default: + for (y = 0; y < h; ++y) { + for (comp = 0; comp < 4; ++comp) { + if (useBinary) { + // Binary color image + for (x = 0; x < w; ++x) { + hexBuf[i++] = p[4*x + comp]; + if (i >= 64) { + writePSBuf(hexBuf, i); + i = 0; + } + } + } else { + // Hex color image + for (x = 0; x < w; ++x) { + digit = p[4*x + comp] / 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + digit = p[4*x + comp] % 16; + hexBuf[i++] = digit + ((digit >= 10)? 'a' - 10: '0'); + if (i >= 64) { + hexBuf[i++] = '\n'; + writePSBuf(hexBuf, i); + i = 0; + } + } } - } - } - } - p -= bitmap->getRowSize(); + } + p -= bitmap->getRowSize(); + } + break; } } if (i != 0) { -- GitLab
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