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Files from Hossein Lotfi

First Active2010-12-07
Last Active2018-03-22
Microsoft Windows Embedded OpenType Font Engine hdmx Table Information Disclosure
Posted Mar 22, 2018
Authored by Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to disclose certain information. The vulnerability is caused due to an error when processing hdmx table and can be exploited to cause an out-of-bounds read memory access.

tags | advisory
systems | windows
advisories | CVE-2018-0761
MD5 | 6020df111c75f8cc65302ac832a29acf
Microsoft Windows Embedded OpenType Font Engine Font Glyphs Handling Information Disclosure
Posted Mar 22, 2018
Authored by Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to disclose certain information. The vulnerability is caused due to an error within the t2embed.dll module when handling font glyphs and can be exploited to cause an out-of-bounds read memory access.

tags | advisory
systems | windows
advisories | CVE-2018-0760
MD5 | bae913487702ff016f83f35d6937a4cf
Microsoft Windows Embedded OpenType Font Engine "MTX_IS_MTX_Data()" Information Disclosure
Posted Mar 22, 2018
Authored by Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to disclose certain information. The vulnerability is caused due to an error within the "MTX_IS_MTX_Data()" function (t2embed.dll) and can be exploited to cause an out-of-bounds read memory access.

tags | advisory
systems | windows
advisories | CVE-2018-0755
MD5 | 84d2907184e537dd1469959220020503
Microsoft Windows LoadUvsTable() / LoadFont() Overflows
Posted May 23, 2017
Authored by Hossein Lotfi | Site secunia.com

Secunia Research has discovered multiple vulnerabilities in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system. An error within the "LoadUvsTable()" function can be exploited to cause a heap-based buffer overflow via a font file containing specially crafted Unicode Variation Sequences tables. An integer overflow error within the "LoadFont()" function can be exploited to cause a heap-based buffer overflow via a font file containing specially crafted Unicode Variation Sequences tables. Successful exploitation of the vulnerabilities allows execution of arbitrary code.

tags | advisory, overflow, arbitrary, vulnerability
systems | windows
advisories | CVE-2017-0014
MD5 | 9ea266579c96614001066291a5387054
Microsoft Windows LoadUvsTable() Buffer Overflow
Posted Mar 15, 2017
Authored by Hossein Lotfi

Microsoft Windows suffers from a LoadUvsTable() heap-based buffer overflow vulnerability.

tags | exploit, overflow
systems | windows
advisories | CVE-2016-7274
MD5 | d9077fb6cc4b0aae1bcc3f705cb69e2c
Microsoft Windows OTF Parsing Table Encoding Record Offset
Posted Nov 10, 2016
Authored by Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to disclose potentially sensitive information or cause a DoS (Denial of Service). The vulnerability is caused due to an integer overflow error when processing CMAP table within Open Type Font (OTF) files and can be exploited to cause a kernel crash or disclose kernel memory via a specially crafted table encoding record offset within a OTF file.

tags | advisory, denial of service, overflow, kernel
systems | windows
advisories | CVE-2016-7210
MD5 | 4ce511799c6758a5bcf73a6815cb1fbe
Microsoft Unicode Scripts Processor Arbitrary Code Execution
Posted Dec 17, 2015
Authored by Secunia, Hossein Lotfi

On the 8th December 2015, Microsoft released Security Bulletin MS15-130 to fix a vulnerability in Unicode Scripts Processor component found by Secunia Research. The vector for a successful exploitation is a specially crafted "True Type Font" (TTF) file, which typically can be embedded in e.g. Microsoft Office documents or even in emails and web-based content depending on the font type. Successful exploitation could result in arbitrary code execution.

tags | advisory, web, arbitrary, code execution
advisories | CVE-2015-6130
MD5 | a7e4a15823312e399086ef314ec3caab
Microsoft Windows usp10.dll "GetFontDesc()" Integer Underflow
Posted Dec 10, 2015
Authored by Secunia, Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to an integer underflow error within the "GetFontDesc()" function in usp10.dll when processing font files cmap table and can be exploited to cause a heap-based buffer overflow via a font file containing cmap table data with specially crafted offset within encoding records. Successful exploitation allows execution of arbitrary code.

tags | advisory, overflow, arbitrary
systems | windows
advisories | CVE-2015-6130
MD5 | 40dcd0bc3dc928328e979414fc2368ba
Google Picasa CAMF Section Integer Overflow
Posted Nov 12, 2015
Authored by Secunia, Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Google Picasa, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to an integer overflow error when processing CAMF section in FOVb images and can be exploited to cause a heap-based buffer overflow. Successful exploitation may allow execution of arbitrary code. The vulnerability is confirmed in versions 3.9.140 Build 239 and 3.9.140 Build 248 running on Windows.

tags | advisory, overflow, arbitrary
systems | windows
MD5 | d13717485ccd4b70775e615f0fea2717
Google Picasa Phase One Tags Processing Integer Overflow
Posted Oct 26, 2015
Authored by Secunia, Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Google Picasa, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to an integer overflow error when processing data related to phase one 0x412 tag and can be exploited to cause a heap-based buffer overflow. Successful exploitation may allow execution of arbitrary code. The vulnerability is confirmed in versions 3.9.140 Build 239 and 3.9.140 Build 248 running on Windows.

tags | advisory, overflow, arbitrary
systems | windows
MD5 | a50ca7789fd842d29a76ad55242cbd86
Microsoft Windows GDI "MRSETDIBITSTODEVICE ::bPlay()" EMF Parsing Memory Corruption
Posted Apr 16, 2015
Authored by Secunia, Hossein Lotfi | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to an error within the "MRSETDIBITSTODEVICE::bPlay()" function (GDI32.dll) and can be exploited to cause a memory corruption via an EMF file with a specially crafted EMR_SETDIBITSTODEVICE record. Successful exploitation allows execution of arbitrary code.

tags | advisory, arbitrary
systems | windows
advisories | CVE-2015-1645
MD5 | 6837605e8bfab6ac2be90456e818f90d
iDEFENSE Security Advisory 2010-12-07.1
Posted Dec 7, 2010
Authored by iDefense Labs, Hossein Lotfi | Site idefense.com

iDefense Security Advisory 12.07.10 - Remote exploitation of a memory corruption vulnerability in Apple Inc.'s QuickTime media player could allow attackers to execute arbitrary code in the context of the targeted user. The vulnerability specifically exists in the way specially crafted PICT image files are handled by the QuickTime PictureViewer. When processing specially crafted PICT image files, Quicktime PictureViewer uses a set value from the file to control the length of a byte swap operation. The byte swap operation is used to convert big endian data to little endian data. QuickTime fails to validate the length value properly before using it. When a length value is larger than the actual buffer size supplied, it will corrupt heap memory beyond the allocated buffer, which could lead to an exploitable condition. QuickTime Player versions prior to 7.6.9 are vulnerable.

tags | advisory, remote, arbitrary
systems | apple
advisories | CVE-2010-3800
MD5 | 8bd49745a5628861795c6438919b07c7
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