Red Hat Security Advisory: cups security update

Important

Multiple heap-based buffer overflows in the (1) DCTStream::readProgressiveSOF and (2) DCTStream::readBaselineSOF functions in the DCT stream parsing code (Stream.cc) in xpdf 3.01 and earlier, as used in products such as (a) Poppler, (b) teTeX, (c) KDE kpdf, (d) pdftohtml, (e) KOffice KWord, (f) CUPS, and (g) libextractor allow user-assisted attackers to cause a denial of service (heap corruption) and possibly execute arbitrary code via a crafted PDF file with an out-of-range number of components (numComps), which is used as an array index.

Heap-based buffer overflow in the StreamPredictor function in Xpdf 3.01, as used in products such as (1) Poppler, (2) teTeX, (3) KDE kpdf, and (4) pdftohtml, (5) KOffice KWord, (6) CUPS, and (7) libextractor allows remote attackers to execute arbitrary code via a PDF file with an out-of-range numComps (number of components) field.

Heap-based buffer overflow in the JPXStream::readCodestream function in the JPX stream parsing code (JPXStream.c) for xpdf 3.01 and earlier, as used in products such as (1) Poppler, (2) teTeX, (3) KDE kpdf, (4) CUPS, and (5) libextractor allows user-assisted attackers to cause a denial of service (heap corruption) and possibly execute arbitrary code via a crafted PDF file with large size values that cause insufficient memory to be allocated.

Buffer overflow in the JBIG2Bitmap::JBIG2Bitmap function in JBIG2Stream.cc in Xpdf, as used in products such as gpdf, kpdf, pdftohtml, poppler, teTeX, CUPS, libextractor, and others, allows attackers to modify memory and possibly execute arbitrary code via unknown attack vectors.