Fix multiple vulnerabilities from imported xpdf code in KOffice and

kdegraphics

Approved by:	portmgr (mcl)

2 files changed, 670 insertions, 1 deletions

diff --git a/editors/calligra/Makefile b/editors/calligra/Makefile
index ec599242a4d1..4851acac05c4 100644
--- a/editors/calligra/Makefile
+++ b/editors/calligra/Makefile
@@ -7,7 +7,7 @@
 
 PORTNAME=	koffice
 PORTVERSION=	1.6.3
-PORTREVISION=	2
+PORTREVISION=	3
 PORTEPOCH=	2
 CATEGORIES=	editors kde
 MASTER_SITES=	${MASTER_SITE_KDE}
diff --git a/editors/calligra/files/patch-koffice-1.6.3-xpdf2-CVE-2007-4352-5392-5393.diff b/editors/calligra/files/patch-koffice-1.6.3-xpdf2-CVE-2007-4352-5392-5393.diff
new file mode 100644
index 000000000000..dabcf23d44aa
--- /dev/null
+++ b/editors/calligra/files/patch-koffice-1.6.3-xpdf2-CVE-2007-4352-5392-5393.diff
@@ -0,0 +1,669 @@
+--- filters/kword/pdf/xpdf/xpdf/Stream.cc
++++ filters/kword/pdf/xpdf/xpdf/Stream.cc
+@@ -1239,6 +1239,7 @@
+ // CCITTFaxStream
+ //------------------------------------------------------------------------
+ 
++#if 0
+ CCITTFaxStream::CCITTFaxStream(Stream *strA, int encodingA, GBool endOfLineA,
+ 			       GBool byteAlignA, int columnsA, int rowsA,
+ 			       GBool endOfBlockA, GBool blackA):
+@@ -1748,6 +1749,609 @@
+   }
+   return (inputBuf >> (inputBits - n)) & (0xffff >> (16 - n));
+ }
++#else // secfix
++CCITTFaxStream::CCITTFaxStream(Stream *strA, int encodingA, GBool endOfLineA,
++			       GBool byteAlignA, int columnsA, int rowsA,
++			       GBool endOfBlockA, GBool blackA):
++    FilterStream(strA) {
++  encoding = encodingA;
++  endOfLine = endOfLineA;
++  byteAlign = byteAlignA;
++  columns = columnsA;
++  if (columns < 1) {
++    columns = 1;
++  } else if (columns > (INT_MAX - 2)/sizeof(int)) {
++    columns = (INT_MAX - 2)/sizeof(int);
++  }
++  rows = rowsA;
++  endOfBlock = endOfBlockA;
++  black = blackA;
++  // 0 <= codingLine[0] < codingLine[1] < ... < codingLine[n] = columns
++  // ---> max codingLine size = columns + 1
++  // refLine has one extra guard entry at the end
++  // ---> max refLine size = columns + 2
++  codingLine = (int *)gmalloc((columns + 1) * sizeof(int));
++  refLine = (int *)gmalloc((columns + 2) * sizeof(int));
++
++  eof = gFalse;
++  row = 0;
++  nextLine2D = encoding < 0;
++  inputBits = 0;
++  codingLine[0] = columns;
++  a0i = 0;
++  outputBits = 0;
++
++  buf = EOF;
++}
++
++CCITTFaxStream::~CCITTFaxStream() {
++  delete str;
++  gfree(refLine);
++  gfree(codingLine);
++}
++
++void CCITTFaxStream::reset() {
++  short code1;
++
++  str->reset();
++  eof = gFalse;
++  row = 0;
++  nextLine2D = encoding < 0;
++  inputBits = 0;
++  codingLine[0] = columns;
++  a0i = 0;
++  outputBits = 0;
++  buf = EOF;
++
++  // skip any initial zero bits and end-of-line marker, and get the 2D
++  // encoding tag
++  while ((code1 = lookBits(12)) == 0) {
++    eatBits(1);
++  }
++  if (code1 == 0x001) {
++    eatBits(12);
++  }
++  if (encoding > 0) {
++    nextLine2D = !lookBits(1);
++    eatBits(1);
++  }
++}
++
++inline void CCITTFaxStream::addPixels(int a1, int blackPixels) {
++  if (a1 > codingLine[a0i]) {
++    if (a1 > columns) {
++      error(getPos(), "CCITTFax row is wrong length (%d)", a1);
++      err = gTrue;
++      a1 = columns;
++    }
++    if ((a0i & 1) ^ blackPixels) {
++      ++a0i;
++    }
++    codingLine[a0i] = a1;
++  }
++}
++
++inline void CCITTFaxStream::addPixelsNeg(int a1, int blackPixels) {
++  if (a1 > codingLine[a0i]) {
++    if (a1 > columns) {
++      error(getPos(), "CCITTFax row is wrong length (%d)", a1);
++      err = gTrue;
++      a1 = columns;
++    }
++    if ((a0i & 1) ^ blackPixels) {
++      ++a0i;
++    }
++    codingLine[a0i] = a1;
++  } else if (a1 < codingLine[a0i]) {
++    if (a1 < 0) {
++      error(getPos(), "Invalid CCITTFax code");
++      err = gTrue;
++      a1 = 0;
++    }
++    while (a0i > 0 && a1 <= codingLine[a0i - 1]) {
++      --a0i;
++    }
++    codingLine[a0i] = a1;
++  }
++}
++
++int CCITTFaxStream::lookChar() {
++  short code1, code2, code3;
++  int b1i, blackPixels, i, bits;
++  GBool gotEOL;
++
++  if (buf != EOF) {
++    return buf;
++  }
++
++  // read the next row
++  if (outputBits == 0) {
++
++    // if at eof just return EOF
++    if (eof) {
++      return EOF;
++    }
++
++    err = gFalse;
++
++    // 2-D encoding
++    if (nextLine2D) {
++      for (i = 0; codingLine[i] < columns; ++i) {
++	refLine[i] = codingLine[i];
++      }
++      refLine[i++] = columns;
++      refLine[i] = columns;
++      codingLine[0] = 0;
++      a0i = 0;
++      b1i = 0;
++      blackPixels = 0;
++      // invariant:
++      // refLine[b1i-1] <= codingLine[a0i] < refLine[b1i] < refLine[b1i+1]
++      //                                                             <= columns
++      // exception at left edge:
++      //   codingLine[a0i = 0] = refLine[b1i = 0] = 0 is possible
++      // exception at right edge:
++      //   refLine[b1i] = refLine[b1i+1] = columns is possible
++      while (codingLine[a0i] < columns) {
++	code1 = getTwoDimCode();
++	switch (code1) {
++	case twoDimPass:
++	  addPixels(refLine[b1i + 1], blackPixels);
++	  if (refLine[b1i + 1] < columns) {
++	    b1i += 2;
++	  }
++	  break;
++	case twoDimHoriz:
++	  code1 = code2 = 0;
++	  if (blackPixels) {
++	    do {
++	      code1 += code3 = getBlackCode();
++	    } while (code3 >= 64);
++	    do {
++	      code2 += code3 = getWhiteCode();
++	    } while (code3 >= 64);
++	  } else {
++	    do {
++	      code1 += code3 = getWhiteCode();
++	    } while (code3 >= 64);
++	    do {
++	      code2 += code3 = getBlackCode();
++	    } while (code3 >= 64);
++	  }
++	  addPixels(codingLine[a0i] + code1, blackPixels);
++	  if (codingLine[a0i] < columns) {
++	    addPixels(codingLine[a0i] + code2, blackPixels ^ 1);
++	  }
++	  while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	    b1i += 2;
++	  }
++	  break;
++	case twoDimVertR3:
++	  addPixels(refLine[b1i] + 3, blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    ++b1i;
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case twoDimVertR2:
++	  addPixels(refLine[b1i] + 2, blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    ++b1i;
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case twoDimVertR1:
++	  addPixels(refLine[b1i] + 1, blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    ++b1i;
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case twoDimVert0:
++	  addPixels(refLine[b1i], blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    ++b1i;
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case twoDimVertL3:
++	  addPixelsNeg(refLine[b1i] - 3, blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    if (b1i > 0) {
++	      --b1i;
++	    } else {
++	      ++b1i;
++	    }
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case twoDimVertL2:
++	  addPixelsNeg(refLine[b1i] - 2, blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    if (b1i > 0) {
++	      --b1i;
++	    } else {
++	      ++b1i;
++	    }
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case twoDimVertL1:
++	  addPixelsNeg(refLine[b1i] - 1, blackPixels);
++	  blackPixels ^= 1;
++	  if (codingLine[a0i] < columns) {
++	    if (b1i > 0) {
++	      --b1i;
++	    } else {
++	      ++b1i;
++	    }
++	    while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
++	      b1i += 2;
++	    }
++	  }
++	  break;
++	case EOF:
++	  addPixels(columns, 0);
++	  eof = gTrue;
++	  break;
++	default:
++	  error(getPos(), "Bad 2D code %04x in CCITTFax stream", code1);
++	  addPixels(columns, 0);
++	  err = gTrue;
++	  break;
++	}
++      }
++
++    // 1-D encoding
++    } else {
++      codingLine[0] = 0;
++      a0i = 0;
++      blackPixels = 0;
++      while (codingLine[a0i] < columns) {
++	code1 = 0;
++	if (blackPixels) {
++	  do {
++	    code1 += code3 = getBlackCode();
++	  } while (code3 >= 64);
++	} else {
++	  do {
++	    code1 += code3 = getWhiteCode();
++	  } while (code3 >= 64);
++	}
++	addPixels(codingLine[a0i] + code1, blackPixels);
++	blackPixels ^= 1;
++      }
++    }
++
++    // byte-align the row
++    if (byteAlign) {
++      inputBits &= ~7;
++    }
++
++    // check for end-of-line marker, skipping over any extra zero bits
++    gotEOL = gFalse;
++    if (!endOfBlock && row == rows - 1) {
++      eof = gTrue;
++    } else {
++      code1 = lookBits(12);
++      while (code1 == 0) {
++	eatBits(1);
++	code1 = lookBits(12);
++      }
++      if (code1 == 0x001) {
++	eatBits(12);
++	gotEOL = gTrue;
++      } else if (code1 == EOF) {
++	eof = gTrue;
++      }
++    }
++
++    // get 2D encoding tag
++    if (!eof && encoding > 0) {
++      nextLine2D = !lookBits(1);
++      eatBits(1);
++    }
++
++    // check for end-of-block marker
++    if (endOfBlock && gotEOL) {
++      code1 = lookBits(12);
++      if (code1 == 0x001) {
++	eatBits(12);
++	if (encoding > 0) {
++	  lookBits(1);
++	  eatBits(1);
++	}
++	if (encoding >= 0) {
++	  for (i = 0; i < 4; ++i) {
++	    code1 = lookBits(12);
++	    if (code1 != 0x001) {
++	      error(getPos(), "Bad RTC code in CCITTFax stream");
++	    }
++	    eatBits(12);
++	    if (encoding > 0) {
++	      lookBits(1);
++	      eatBits(1);
++	    }
++	  }
++	}
++	eof = gTrue;
++      }
++
++    // look for an end-of-line marker after an error -- we only do
++    // this if we know the stream contains end-of-line markers because
++    // the "just plow on" technique tends to work better otherwise
++    } else if (err && endOfLine) {
++      while (1) {
++	code1 = lookBits(13);
++	if (code1 == EOF) {
++	  eof = gTrue;
++	  return EOF;
++	}
++	if ((code1 >> 1) == 0x001) {
++	  break;
++	}
++	eatBits(1);
++      }
++      eatBits(12); 
++      if (encoding > 0) {
++	eatBits(1);
++	nextLine2D = !(code1 & 1);
++      }
++    }
++
++    // set up for output
++    if (codingLine[0] > 0) {
++      outputBits = codingLine[a0i = 0];
++    } else {
++      outputBits = codingLine[a0i = 1];
++    }
++
++    ++row;
++  }
++
++  // get a byte
++  if (outputBits >= 8) {
++    buf = (a0i & 1) ? 0x00 : 0xff;
++    outputBits -= 8;
++    if (outputBits == 0 && codingLine[a0i] < columns) {
++      ++a0i;
++      outputBits = codingLine[a0i] - codingLine[a0i - 1];
++    }
++  } else {
++    bits = 8;
++    buf = 0;
++    do {
++      if (outputBits > bits) {
++	buf <<= bits;
++	if (!(a0i & 1)) {
++	  buf |= 0xff >> (8 - bits);
++	}
++	outputBits -= bits;
++	bits = 0;
++      } else {
++	buf <<= outputBits;
++	if (!(a0i & 1)) {
++	  buf |= 0xff >> (8 - outputBits);
++	}
++	bits -= outputBits;
++	outputBits = 0;
++	if (codingLine[a0i] < columns) {
++	  ++a0i;
++	  outputBits = codingLine[a0i] - codingLine[a0i - 1];
++	} else if (bits > 0) {
++	  buf <<= bits;
++	  bits = 0;
++	}
++      }
++    } while (bits);
++  }
++  if (black) {
++    buf ^= 0xff;
++  }
++  return buf;
++}
++
++short CCITTFaxStream::getTwoDimCode() {
++  short code;
++  CCITTCode *p;
++  int n;
++
++  code = 0; // make gcc happy
++  if (endOfBlock) {
++    code = lookBits(7);
++    p = &twoDimTab1[code];
++    if (p->bits > 0) {
++      eatBits(p->bits);
++      return p->n;
++    }
++  } else {
++    for (n = 1; n <= 7; ++n) {
++      code = lookBits(n);
++      if (n < 7) {
++	code <<= 7 - n;
++      }
++      p = &twoDimTab1[code];
++      if (p->bits == n) {
++	eatBits(n);
++	return p->n;
++      }
++    }
++  }
++  error(getPos(), "Bad two dim code (%04x) in CCITTFax stream", code);
++  return EOF;
++}
++
++short CCITTFaxStream::getWhiteCode() {
++  short code;
++  CCITTCode *p;
++  int n;
++
++  code = 0; // make gcc happy
++  if (endOfBlock) {
++    code = lookBits(12);
++    if (code == EOF) {
++      return 1;
++    }
++    if ((code >> 5) == 0) {
++      p = &whiteTab1[code];
++    } else {
++      p = &whiteTab2[code >> 3];
++    }
++    if (p->bits > 0) {
++      eatBits(p->bits);
++      return p->n;
++    }
++  } else {
++    for (n = 1; n <= 9; ++n) {
++      code = lookBits(n);
++      if (code == EOF) {
++	return 1;
++      }
++      if (n < 9) {
++	code <<= 9 - n;
++      }
++      p = &whiteTab2[code];
++      if (p->bits == n) {
++	eatBits(n);
++	return p->n;
++      }
++    }
++    for (n = 11; n <= 12; ++n) {
++      code = lookBits(n);
++      if (code == EOF) {
++	return 1;
++      }
++      if (n < 12) {
++	code <<= 12 - n;
++      }
++      p = &whiteTab1[code];
++      if (p->bits == n) {
++	eatBits(n);
++	return p->n;
++      }
++    }
++  }
++  error(getPos(), "Bad white code (%04x) in CCITTFax stream", code);
++  // eat a bit and return a positive number so that the caller doesn't
++  // go into an infinite loop
++  eatBits(1);
++  return 1;
++}
++
++short CCITTFaxStream::getBlackCode() {
++  short code;
++  CCITTCode *p;
++  int n;
++
++  code = 0; // make gcc happy
++  if (endOfBlock) {
++    code = lookBits(13);
++    if (code == EOF) {
++      return 1;
++    }
++    if ((code >> 7) == 0) {
++      p = &blackTab1[code];
++    } else if ((code >> 9) == 0 && (code >> 7) != 0) {
++      p = &blackTab2[(code >> 1) - 64];
++    } else {
++      p = &blackTab3[code >> 7];
++    }
++    if (p->bits > 0) {
++      eatBits(p->bits);
++      return p->n;
++    }
++  } else {
++    for (n = 2; n <= 6; ++n) {
++      code = lookBits(n);
++      if (code == EOF) {
++	return 1;
++      }
++      if (n < 6) {
++	code <<= 6 - n;
++      }
++      p = &blackTab3[code];
++      if (p->bits == n) {
++	eatBits(n);
++	return p->n;
++      }
++    }
++    for (n = 7; n <= 12; ++n) {
++      code = lookBits(n);
++      if (code == EOF) {
++	return 1;
++      }
++      if (n < 12) {
++	code <<= 12 - n;
++      }
++      if (code >= 64) {
++	p = &blackTab2[code - 64];
++	if (p->bits == n) {
++	  eatBits(n);
++	  return p->n;
++	}
++      }
++    }
++    for (n = 10; n <= 13; ++n) {
++      code = lookBits(n);
++      if (code == EOF) {
++	return 1;
++      }
++      if (n < 13) {
++	code <<= 13 - n;
++      }
++      p = &blackTab1[code];
++      if (p->bits == n) {
++	eatBits(n);
++	return p->n;
++      }
++    }
++  }
++  error(getPos(), "Bad black code (%04x) in CCITTFax stream", code);
++  // eat a bit and return a positive number so that the caller doesn't
++  // go into an infinite loop
++  eatBits(1);
++  return 1;
++}
++
++short CCITTFaxStream::lookBits(int n) {
++  int c;
++
++  while (inputBits < n) {
++    if ((c = str->getChar()) == EOF) {
++      if (inputBits == 0) {
++	return EOF;
++      }
++      // near the end of the stream, the caller may ask for more bits
++      // than are available, but there may still be a valid code in
++      // however many bits are available -- we need to return correct
++      // data in this case
++      return (inputBuf << (n - inputBits)) & (0xffff >> (16 - n));
++    }
++    inputBuf = (inputBuf << 8) + c;
++    inputBits += 8;
++  }
++  return (inputBuf >> (inputBits - n)) & (0xffff >> (16 - n));
++}
++
++#endif
+ 
+ GString *CCITTFaxStream::getPSFilter(const char *indent) {
+   GString *s;
+@@ -1929,6 +2533,12 @@
+     // allocate a buffer for the whole image
+     bufWidth = ((width + mcuWidth - 1) / mcuWidth) * mcuWidth;
+     bufHeight = ((height + mcuHeight - 1) / mcuHeight) * mcuHeight;
++    if (bufWidth <= 0 || bufHeight <= 0 ||
++	bufWidth > INT_MAX / bufWidth / (int)sizeof(int)) {
++      error(getPos(), "Invalid image size in DCT stream");
++      y = height;
++      return;
++    }
+     for (i = 0; i < numComps; ++i) {
+       frameBuf[i] = (int *)gmalloc(bufWidth * bufHeight * sizeof(int));
+       memset(frameBuf[i], 0, bufWidth * bufHeight * sizeof(int));
+@@ -2975,6 +3585,11 @@
+   }
+   scanInfo.firstCoeff = str->getChar();
+   scanInfo.lastCoeff = str->getChar();
++  if (scanInfo.firstCoeff < 0 || scanInfo.lastCoeff > 63 ||
++      scanInfo.firstCoeff > scanInfo.lastCoeff) {
++    error(getPos(), "Bad DCT coefficient numbers in scan info block");
++    return gFalse;
++  }
+   c = str->getChar();
+   scanInfo.ah = (c >> 4) & 0x0f;
+   scanInfo.al = c & 0x0f;
+--- filters/kword/pdf/xpdf/xpdf/Stream.h
++++ filters/kword/pdf/xpdf/xpdf/Stream.h
+@@ -513,13 +513,17 @@
+   int row;			// current row
+   int inputBuf;			// input buffer
+   int inputBits;		// number of bits in input buffer
+-  short *refLine;		// reference line changing elements
+-  int b1;			// index into refLine
+-  short *codingLine;		// coding line changing elements
+-  int a0;			// index into codingLine
++  int *codingLine;             // coding line changing elements
++  int *refLine;                        // reference line changing elements
++  int a0i;                     // index into codingLine
++  GBool err;                   // error on current line
++
+   int outputBits;		// remaining output bits
+   int buf;			// character buffer
+ 
++  void addPixels(int a1, int black);
++  void addPixelsNeg(int a1, int black);
++
+   short getTwoDimCode();
+   short getWhiteCode();
+   short getBlackCode();