CVE-2020-27778

A flaw was found in Poppler in the way certain PDF files were converted into HTML. A remote attacker could exploit this flaw by providing a malicious PDF file that, when processed by the 'pdftohtml' program, would crash the application causing a denial of service.

A flaw was found in Poppler in the way certain PDF files were converted into HTML. A remote attacker could exploit this flaw by providing a malicious PDF file that, when processed by the 'pdftohtml' program, would crash the application causing a denial of service.

Poppler is a free software utility library for rendering Portable Document Format (PDF) documents. \ Its development is supported by freedesktop.org. It is commonly used on Linux systems,and is used by \ the PDF viewers of the open source GNOME and KDE desktop environments.

Security Fix(es):

A flaw was found in Poppler in the way certain PDF files were converted into HTML. A remote attacker could exploit this flaw by providing a malicious PDF file that, when processed by the 'pdftohtml' program, would crash the application causing a denial of service.(CVE-2020-27778)

In Poppler through 0.76.1, there is a heap-based buffer over-read in JPXStream::init in JPEG2000Stream.cc via data with inconsistent heights or widths.(CVE-2019-12293)

Poppler is a Portable Document Format (PDF) rendering library, used by applications such as Evince.

The evince packages provide a simple multi-page document viewer for Portable Document Format (PDF), PostScript (PS), Encapsulated PostScript (EPS) files, and, with additional back-ends, also the Device Independent File format (DVI) files.

The following packages have been upgraded to a later upstream version: poppler (20.11.0). (BZ#1644423)

Security Fix(es):

• poppler: pdftohtml: access to uninitialized pointer could lead to DoS (CVE-2020-27778)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.4 Release Notes linked from the References section.

A flaw was found in Poppler in the way certain PDF files were converted into HTML. A remote attacker could exploit this flaw by providing a malicious PDF file that, when processed by the 'pdftohtml' program, would crash the application causing a denial of service.

Poppler is a Portable Document Format (PDF) rendering library, used by applications such as Evince.

The evince packages provide a simple multi-page document viewer for Portable Document Format (PDF), PostScript (PS), Encapsulated PostScript (EPS) files, and, with additional back-ends, also the Device Independent File format (DVI) files.

The following packages have been upgraded to a later upstream version: poppler (20.11.0). (BZ#1644423)

Security Fix(es):

• poppler: pdftohtml: access to uninitialized pointer could lead to DoS (CVE-2020-27778)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

buffer overflow in pdftohtml could result in a DoS (CVE-2020-27778).

This update for poppler fixes the following issues:

• CVE-2017-18267: Fixed an infinite recursion that would allow remote attackers to cause a denial of service (bsc#1092945).
• CVE-2018-13988: Added an improper implementation check which otherwise could allow buffer overflows, memory corruption, and denial of service (bsc#1102531).
• CVE-2018-16646: Fixed an infinite recursion which could allow a denial-of-service attack via a specially crafted PDF file (bsc#1107597).
• CVE-2018-18897: Fixed a memory leak (bsc#1114966).
• CVE-2018-19058: Fixed a bug which could allow a denial-of-service attack via a specially crafted PDF file (bsc#1115187).
• CVE-2018-19059: Fixed an out-of-bounds read access which could allow a denial-of-service attack (bsc#1115186).
• CVE-2018-19060: Fixed a NULL pointer dereference which could allow a denial-of-service attack (bsc#1115185).
• CVE-2018-19149: Fixed a NULL pointer dereference which could allow a denial-of-service attack (bsc#1115626).
• CVE-2018-20481: Fixed a NULL pointer dereference while handling unallocated XRef entries which could allow a denial-of-service attack (bsc#1120495).
• CVE-2018-20551: Fixed a reachable assertion which could allow a denial-of-service attack through specially crafted PDF files (bsc#1120496).
• CVE-2018-20650: Fixed a reachable assertion which could allow denial-of-service through specially crafted PDF files (bsc#1120939).
• CVE-2018-20662: Fixed a bug which could potentially crash the running process by SIGABRT resulting in a denial-of-service attack through a specially crafted PDF file (bsc#1120956).
• CVE-2019-10871: Fixed a heap-based buffer over-read in the function PSOutputDev::checkPageSlice at PSOutputDev.cc (bsc#1131696).
• CVE-2019-10872: Fixed a heap-based buffer over-read in the function Splash::blitTransparent at splash/Splash.cc (bsc#1131722).
• CVE-2019-14494: Fixed a divide-by-zero error in the function SplashOutputDev::tilingPatternFill (bsc#1143950).
• CVE-2019-7310: Fixed a heap-based buffer over-read (due to an integer signedness error in the XRef::getEntry function in XRef.cc) that allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted PDF document (bsc#1124150).
• CVE-2019-9200: Fixed a heap-based buffer underwrite which could allow denial-of-service attack through a specially crafted PDF file (bsc#1127329)
• CVE-2019-9631: Fixed a heap-based buffer over-read in the CairoRescaleBox.cc downsample_row_box_filter function (bsc#1129202).
• CVE-2019-9903: Fixed excessive stack consumption in the Dict::find() method, which can be triggered by passing a crafted pdf file to the pdfunite binary (bsc#1130229).
• CVE-2019-9959: Fixed integer overflow that made it possible to allocate a large memory chunk on the heap with a size controlled by an attacker (bsc#1142465).
• CVE-2020-27778: Fixed buffer overflow vulnerability in pdftohtml (bsc#1179163).

This update for poppler fixes the following issues:

• CVE-2017-18267: Fixed an infinite recursion that would allow remote attackers to cause a denial of service (bsc#1092945).
• CVE-2018-13988: Added an improper implementation check which otherwise could allow buffer overflows, memory corruption, and denial of service (bsc#1102531).
• CVE-2018-16646: Fixed an infinite recursion which could allow a denial-of-service attack via a specially crafted PDF file (bsc#1107597).
• CVE-2018-18897: Fixed a memory leak (bsc#1114966).
• CVE-2018-19058: Fixed a bug which could allow a denial-of-service attack via a specially crafted PDF file (bsc#1115187).
• CVE-2018-19059: Fixed an out-of-bounds read access which could allow a denial-of-service attack (bsc#1115186).
• CVE-2018-19060: Fixed a NULL pointer dereference which could allow a denial-of-service attack (bsc#1115185).
• CVE-2018-19149: Fixed a NULL pointer dereference which could allow a denial-of-service attack (bsc#1115626).
• CVE-2018-20481: Fixed a NULL pointer dereference while handling unallocated XRef entries which could allow a denial-of-service attack (bsc#1120495).
• CVE-2018-20551: Fixed a reachable assertion which could allow a denial-of-service attack through specially crafted PDF files (bsc#1120496).
• CVE-2018-20650: Fixed a reachable assertion which could allow denial-of-service through specially crafted PDF files (bsc#1120939).
• CVE-2018-20662: Fixed a bug which could potentially crash the running process by SIGABRT resulting in a denial-of-service attack through a specially crafted PDF file (bsc#1120956).
• CVE-2019-10871: Fixed a heap-based buffer over-read in the function PSOutputDev::checkPageSlice at PSOutputDev.cc (bsc#1131696).
• CVE-2019-10872: Fixed a heap-based buffer over-read in the function Splash::blitTransparent at splash/Splash.cc (bsc#1131722).
• CVE-2019-14494: Fixed a divide-by-zero error in the function SplashOutputDev::tilingPatternFill (bsc#1143950).
• CVE-2019-7310: Fixed a heap-based buffer over-read (due to an integer signedness error in the XRef::getEntry function in XRef.cc) that allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted PDF document (bsc#1124150).
• CVE-2019-9200: Fixed a heap-based buffer underwrite which could allow denial-of-service attack through a specially crafted PDF file (bsc#1127329)
• CVE-2019-9631: Fixed a heap-based buffer over-read in the CairoRescaleBox.cc downsample_row_box_filter function (bsc#1129202).
• CVE-2019-9903: Fixed excessive stack consumption in the Dict::find() method, which can be triggered by passing a crafted pdf file to the pdfunite binary (bsc#1130229).
• CVE-2019-9959: Fixed integer overflow that made it possible to allocate a large memory chunk on the heap with a size controlled by an attacker (bsc#1142465).
• CVE-2020-27778: Fixed buffer overflow vulnerability in pdftohtml (bsc#1179163).

This update for poppler fixes the following issues:

• CVE-2020-27778: Fixed a buffer overflow in pdftohtml (bsc#1179163).
• CVE-2019-14494: Fixed a divide-by-zero error in pdftoppm (bsc#1143950).
• CVE-2019-9959: Fixed an integer overflow in pdftocairo (bsc#1142465).
• CVE-2019-10871: Fixed an invalid memory access in pdftops (bsc#1131696).
• CVE-2019-10872: Fixed an invalid memory access in pdftoppm (bsc#1131722).
• CVE-2019-9903: Fixed a buffer overflow in pdfunite (bsc#1130229).
• CVE-2019-7310: Fixed an application crash in pdftocairo (bsc#1124150).
• CVE-2019-9631: Fixed an invalid memory access in pdftocairo (bsc#1129202).

This update for poppler fixes the following issues:

• CVE-2020-27778: Fixed a buffer overflow in pdftohtml (bsc#1179163).
• CVE-2019-14494: Fixed a divide-by-zero error in pdftoppm (bsc#1143950).
• CVE-2019-9959: Fixed an integer overflow in pdftocairo (bsc#1142465).
• CVE-2019-10871: Fixed an invalid memory access in pdftops (bsc#1131696).
• CVE-2019-10872: Fixed an invalid memory access in pdftoppm (bsc#1131722).
• CVE-2019-9903: Fixed a buffer overflow in pdfunite (bsc#1130229).
• CVE-2019-7310: Fixed an application crash in pdftocairo (bsc#1124150).
• CVE-2019-9631: Fixed an invalid memory access in pdftocairo (bsc#1129202).

It was discovered that Poppler incorrectly handled certain files. If a user or automated system were tricked into opening a crafted PDF file, an attacker could cause a denial of service.