Improper Input Validation vulnerability in Apache POI. The issue affects the parsing of OOXML format files like xlsx, docx and pptx. These file formats are basically zip files and it is possible for malicious users to add zip entries with duplicate names (including the path) in the zip. In this case, products reading the affected file could read different data because 1 of the zip entries with the duplicate name is selected over another but different products may choose a different zip entry. This issue affects Apache POI poi-ooxml before 5.4.0. poi-ooxml 5.4.0 has a check that throws an exception if zip entries with duplicate file names are found in the input file. Users are recommended to upgrade to version poi-ooxml 5.4.0, which fixes the issue. Please read https://poi.apache.org/security.html for recommendations about how to use the POI libraries securely.

A shortcoming in the HMEF package of poi-scratchpad (Apache POI) allows an attacker to cause an Out of Memory exception. This package is used to read TNEF files (Microsoft Outlook and Microsoft Exchange Server). If an application uses poi-scratchpad to parse TNEF files and the application allows untrusted users to supply them, then a carefully crafted file can cause an Out of Memory exception. This issue affects poi-scratchpad version 5.2.0 and prior versions. Users are recommended to upgrade to poi-scratchpad 5.2.1.

Apache POI could allow a remote attacker to obtain sensitive information, caused by an XML external entity (XXE) error when processing XML data by tool XSSFExportToXml. By sending a specially-crafted document, a remote attacker could exploit this vulnerability to obtain sensitive information.

Apache POI in versions prior to release 3.17 are vulnerable to Denial of Service Attacks: 1) Infinite Loops while parsing crafted WMF, EMF, MSG and macros (POI bugs 61338 and 61294), and 2) Out of Memory Exceptions while parsing crafted DOC, PPT and XLS (POI bugs 52372 and 61295).

Apache POI in versions prior to release 3.15 allows remote attackers to cause a denial of service (CPU consumption) via a specially crafted OOXML file, aka an XML Entity Expansion (XEE) attack.

The XLSX2CSV example in Apache POI before 3.14 allows remote attackers to read arbitrary files via a crafted OpenXML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

A denial of service flaw was found in the way the HSLFSlideShow class implementation in Apache POI handled certain PPT files. A remote attacker could submit a specially crafted PPT file that would cause Apache POI to hang indefinitely.

Upstream Issue:

https://issues.apache.org/bugzilla/showbug.cgi?id=57272

Upstream Fix:

https://svn.apache.org/viewvc?view=revision&revision=1643680

Apache POI is a library providing Java API for working with OOXML documentfiles.It was found that Apache POI would resolve entities in OOXML documents.A remote attacker able to supply OOXML documents that are parsed by ApachePOI could use this flaw to read files accessible to the user running theapplication server, and potentially perform more advanced XML ExternalEntity (XXE) attacks. (CVE-2014-3529)It was found that Apache POI would expand an unlimited number of entitiesin OOXML documents. A remote attacker able to supply OOXML documents thatare parsed by Apache POI could use this flaw to trigger a denial of serviceattack via excessive CPU and memory consumption. (CVE-2014-3574)All users of Red Hat JBoss BPM Suite 6.0.3 as provided from the Red HatCustomer Portal are advised to apply this security update.

Apache POI is a library providing Java API for working with OOXML documentfiles.It was found that Apache POI would resolve entities in OOXML documents.A remote attacker able to supply OOXML documents that are parsed by ApachePOI could use this flaw to read files accessible to the user running theapplication server, and potentially perform more advanced XML ExternalEntity (XXE) attacks. (CVE-2014-3529)It was found that Apache POI would expand an unlimited number of entitiesin OOXML documents. A remote attacker able to supply OOXML documents thatare parsed by Apache POI could use this flaw to trigger a denial of serviceattack via excessive CPU and memory consumption. (CVE-2014-3574)All users of Red Hat JBoss BRMS 6.0.3 as provided from the Red HatCustomer Portal are advised to apply this security update.

Apache POI is a library providing Java API for working with OOXML documentfiles.It was found that Apache POI would resolve entities in OOXML documents.A remote attacker able to supply OOXML documents that are parsed by ApachePOI could use this flaw to read files accessible to the user running theapplication server, and potentially perform more advanced XML ExternalEntity (XXE) attacks. (CVE-2014-3529)It was found that Apache POI would expand an unlimited number of entitiesin OOXML documents. A remote attacker able to supply OOXML documents thatare parsed by Apache POI could use this flaw to trigger a denial of serviceattack via excessive CPU and memory consumption. (CVE-2014-3574)All users of Red Hat JBoss Data Virtualization 6.0.0 as provided from theRed Hat Customer Portal are advised to apply this security update.

Apache POI is a library providing Java API for working with OOXML documentfiles.It was found that Apache POI would resolve entities in OOXML documents.A remote attacker able to supply OOXML documents that are parsed by ApachePOI could use this flaw to read files accessible to the user running theapplication server, and potentially perform more advanced XML ExternalEntity (XXE) attacks. (CVE-2014-3529)It was found that Apache POI would expand an unlimited number of entitiesin OOXML documents. A remote attacker able to supply OOXML documents thatare parsed by Apache POI could use this flaw to trigger a denial of serviceattack via excessive CPU and memory consumption. (CVE-2014-3574)All users of Red Hat JBoss Fuse Service Works 6.0.0 as provided from theRed Hat Customer Portal are advised to apply this security update.

A flaw was found in the way Apache POI, the Java API for Microsoft Office file formats, handles memory when processing certain Channel Definition Format (CDF) / Compound File Binary Format (CFBF) documents. Apache POI allocates arrays with arbitrary sizes specified in the document. A remote attacker could exploit this flaw by providing a specially-crafted CDF / CFBF file to an application using Apache POI, leading to an to OutOfMemoryError exception in the current thread, or potentially destabilization of the whole Java Virtual Machine instance.

A flaw was found in the way Apache POI, the Java API for Microsoft Office file formats, handles memory when processing certain Channel Definition Format (CDF) / Compound File Binary Format (CFBF) documents. Apache POI allocates arrays with arbitrary sizes specified in the document. A remote attacker could exploit this flaw by providing a specially-crafted CDF / CFBF file to an application using Apache POI, leading to an to OutOfMemoryError exception in the current thread, or potentially destabilization of the whole Java Virtual Machine instance.