Significant FormBook Distribution Campaigns Impacting the U.S. and South Korea

We observed several high-volume FormBook malware distribution campaigns primarily taking aim at Aerospace, Defense Contractor, and Manufacturing sectors within the U.S. and South Korea during the past few months. The attackers involved in these email campaigns leveraged a variety of distribution...

Buffer Overflow Vulnerability in WPS Forms

WPS Office is an office software suite developed independently by Kingsoft Corporation. A buffer overflow vulnerability exists in WPS Forms, which occurs when WPS Formset.exe is parsing a specific xls file. An attacker can exploit the vulnerability to cause a denial of service, which can lead to...

Extreme Office 2017 suffers from a memory corruption vulnerability (CNVD-2017-31181)

Extreme Office is an independently controlled office learning software developed by Beijing Haiteng Times Technology Co. Extreme Forms 2017 can create, modify and edit xls, xlsx files. A memory corruption vulnerability exists in Extreme Forms in Extreme Office when handling special xls files. An...

Extreme Office 2017 suffers from a memory corruption vulnerability (CNVD-2017-31182)

Extreme Office is an independently controlled office learning software developed by Beijing Haiteng Times Technology Co. Extreme Forms 2017 can create, modify and edit xls, xlsx files. A memory corruption vulnerability exists in Extreme Forms in Extreme Office when handling special xls files. An...

Extreme Office 2017 suffers from a memory corruption vulnerability (CNVD-2017-31180)

Extreme Office is an independently controlled office learning software developed by Beijing Haiteng Times Technology Co. Extreme Forms 2017 can create, modify and edit xls, xlsx files. A memory corruption vulnerability exists in Extreme Forms in Extreme Office when handling special xls files, whi...

Ichitaro Office Excel File Code Execution Vulnerability(CVE-2017-2790)

Summary A vulnerability was discovered within the Ichitaro word processor. Ichitaro is published by JustSystems and is considered one of the more popular word processors used within Japan. Ichitaro handles Microsoft Excel's .xls file format. When processing a record type of 0x3c from a Workbook...

Fedora 25 : freexl (2017-b7e6e4cfc1)

This update fixes a Cisco Talos CVE : 'A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.' Note that Tenable Network Security has extracted the preceding description block directly...

Lexmark Perceptive Document Filters XLS ShapeHLink Information Disclosure Vulnerability(CVE-2017-2806)

Summary An exploitable arbitrary read exists in the XLS parsing of the Lexmark Perspective Document Filters conversion functionality. A crafted XLS document can lead to a arbitrary read resulting in memory disclosure. The vulnerability was confirmed on versions 11.3.0.2228 and 11.3.0.2400 Tested...

AntennaHouse DMC HTMLFilter FillRowFormat Code Execution Vulnerability(CVE-2017-2783)

Summary An exploitable heap corruption vulnerability exists in the FillRowFormat functionality of AntennaHouse DMC HTMLFilter that is shipped with MarkLogic 8.0-6. A specially crafted xls file can cause a heap corruption resulting in arbitrary code execution. An attacker can send/provide maliciou...

AntennaHouse DMC HTMLFilter iBldDirInfo Code Execution Vulnerability(CVE-2017-2792)

Summary An exploitable heap corruption vulnerability exists in the iBldDirInfo functionality of AntennaHouse DMC HTMLFilter used by MarkLogic 8.0-6. A specially crafted xls file can cause a heap corruption resulting in arbitrary code execution. An attacker can provide a malicious xls file to...

AntennaHouse DMC HTMLFilter AddSst Code Execution Vulnerability(CVE-2017-2799)

Summary An exploitable heap corruption vulnerability exists in the AddSst functionality of AntennaHouse DMC HTMLFilter as used by MarkLogioc 8.0-6. A specially crafted XLS file can cause a heap corruption resulting in arbitrary code execution. An attacker can send/provide a malicious XLS file to...

AntennaHouse DMC HTMLFilter GetIndexArray Code Execution Vulnerability(CVE-2017-2798)

Summary An exploitable heap corruption vulnerability exists in the GetIndexArray functionality of AntennaHouse DMC HTMLFilter as used by MarkLogioc 8.0-6. A specially crafted XLS file can cause a heap corruption resulting in arbitrary code execution. An attacker can send/provide a malicious XLS...

AntennaHouse DMC HTMLFilter Txo Code Execution Vulnerability(CVE-2017-2795)

Summary An exploitable heap corruption vulnerability exists in the Txo functionality of AntennaHouse DMC HTMLFilter as used by MarkLogic 8.0-6. A specially crafted xls file can cause a heap corruption resulting in arbitrary code execution. An attacker can send/provide malicious XLS file to trigge...

AntennaHouse DMC HTMLFilter UnCompressUnicode Code Execution Vulnerability(CVE-2017-2793)

Summary An exploitable heap corruption vulnerability exists in the UnCompressUnicode functionality of AntennaHouse DMC HTMLFilter used by MarkLogic 8.0-6. A specially crafted xls file can cause a heap corruption resulting in arbitrary code execution. An attacker can send/provide malicious XLS fil...

Remote Code Execution (RCE) Through Heap-based Buffer Overflow

freexl is vulnerable to remote code execution RCE Through heap based buffer overflow. The library does not check the content and dimension of the XLS files input to the readbiffnextrecord function, allowing the vulnerability to be triggered when a malicious XLS file is passed to the application...

Remote Code Execution (RCE) Via Heap-based Buffer Overflow Vulnerability

freexl is vulnerable to remote code execution RCE via heap based buffer overflow. The attackers can get full control over the heap overflow since it does not check the content and dimension of the XLS files input to the readlegacybiff function. The vulnerability can be triggered only when malicio...

FreeXL read_biff_next_record Code Execution Vulnerability(CVE-2017-2923)

Summary An exploitable heap based buffer overflow vulnerability exists in the readbiffnextrecord function of FreeXL 1.0.3. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability. Tested...

Multiple exploitable heap-based buffer overflow vulnerabilities exists in FreeXL 1.0.3

Cisco TALOS reports: An exploitable heap based buffer overflow vulnerability exists in the readbiffnextrecord function of FreeXL 1.0.3. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this...

FreeXL read_biff_next_record Code Execution Vulnerability

Summary An exploitable heap based buffer overflow vulnerability exists in the readbiffnextrecord function of FreeXL 1.0.3. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability. Tested...

FreeXL BIFF Dimension Marker Code Execution Vulnerability

Summary An exploitable heap-based buffer overflow vulnerability exists in the readlegacybiff function of FreeXL 1.0.3. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability. Tested...