x86 task switch to VM86 mode mis-handled

ISSUE DESCRIPTION LDTR, just like TR, is purely a protected mode facility. Hence even when switching to a VM86 mode task, LDTR loading needs to follow protected mode semantics. This was violated by the code. IMPACT On SVM AMD hardware: a malicious unprivileged guest process can escalate its...

guest 32-bit ELF symbol table load leaking host data

ISSUE DESCRIPTION Along with their main kernel binary, unprivileged guests may arrange to have their Xen environment load kernel symbol tables for their use. The ELF image metadata created for this purpose has a few unused bytes when the symbol table binary is in 32-bit ELF format. These unused...

xen-kernel -- x86 null segments not always treated as unusable

The Xen Project reports: The Xen x86 emulator erroneously failed to consider the unusability of segments when performing memory accesses. The intended behaviour is as follows: The user data segment %ds, %es, %fs and %gs selectors may be NULL in 32-bit to prevent access. In 64-bit, NULL has a...

Microsoft Edge - 'CText­Extractor::Get­Block­Text' Out-of-Bounds Read (MS16-104)

::first-letter border: 0; white-space: pre-line; Aalert;&x­D;&x­D;B Description Though I did not investigate thoroughly, I did find out the following: The root cause appears to be an integer underflow in a 32-bit variable used in CText­Extractor..Get­Block­Text as an index to read a WCHAR in a...

Fedora 25 : xen (2016-1d8429b89f)

fix build problem with glibc 2.24 x86: Disallow L3 recursive pagetable for 32-bit PV guests XSA-185, CVE-2016-7092 x86: Mishandling of instruction pointer truncation during emulation XSA-186, CVE-2016-7093 x86 HVM: Overflow of shctxt-segreg XSA-187, CVE-2016-7094 pandoc documentation has dependen...

Microsoft Windows Kernel 'Win32k.sys' CVE-2016-7215 Local Privilege Escalation Vulnerability

Description Microsoft Windows is prone to a local privilege-escalation vulnerability that occurs in the Windows kernel. A local attacker can exploit this issue to execute arbitrary code in kernel mode with elevated privileges. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit...

Microsoft Windows CVE-2016-7223 Local Privilege Escalation Vulnerability

Description Microsoft Windows is prone to a local privilege-escalation vulnerability. A local attacker can exploit this issue to run processes with elevated privileges. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit Systems Microsoft Windows 10 Version 1607 for x64-based Syste...

Microsoft Windows Kernel 'Win32k.sys' CVE-2016-7255 Local Privilege Escalation Vulnerability

Description Microsoft Windows is prone to a local privilege-escalation vulnerability that occurs in the Windows kernel. A local attacker can exploit this issue to execute arbitrary code in kernel mode with elevated privileges. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit...

Microsoft Windows CVE-2016-7224 Local Privilege Escalation Vulnerability

Description Microsoft Windows is prone to a local privilege-escalation vulnerability. A local attacker can exploit this issue to run processes with elevated privileges. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit Systems Microsoft Windows 10 Version 1607 for x64-based Syste...

Microsoft Windows CVE-2016-7225 Local Privilege Escalation Vulnerability

Description Microsoft Windows is prone to a local privilege-escalation vulnerability. A local attacker can exploit this issue to run processes with elevated privileges. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit Systems Microsoft Windows 10 Version 1607 for x64-based Syste...

Microsoft Windows Kernel 'Win32k.sys' CVE-2016-7246 Local Privilege Escalation Vulnerability

Description Microsoft Windows is prone to a local privilege-escalation vulnerability that occurs in the Windows kernel. A local attacker can exploit this issue to execute arbitrary code in kernel mode with elevated privileges. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit...

Microsoft SQL Server CVE-2016-7254 Privilege Escalation Vulnerability

Description Microsoft SQL Server is prone to a privilege-escalation vulnerability. An attacker can exploit this issue to gain elevated privileges. Technologies Affected Microsoft SQL Server 2012 for 32-bit Systems Service Pack 2 Microsoft SQL Server 2012 for 32-bit Systems Service Pack 3 Microsof...

CVE-2016-8617

The base64 encode function in curl before version 7.51.0 is prone to a buffer being under allocated in 32bit systems if it receives at least 1Gb as input via CURLOPTUSERNAME...

CVE-2016-8618

The libcurl API function called curlmaprintf before version 7.51.0 can be tricked into doing a double-free due to an unsafe sizet multiplication, on systems using 32 bit sizet variables...

CURL-CVE-2016-8618 double free in curl_maprintf

The libcurl API function called curlmaprintf can be tricked into doing a double free due to an unsafe sizet multiplication, on systems using 32-bit sizet variables. The function is also used internally in numerous situations. The function doubles an allocated memory area with realloc and allows t...

URL unescape heap overflow via integer truncation

The URL percent-encoding decode function in libcurl is called curleasyunescape. Internally, even if this function would be made to allocate a destination buffer larger than 2GB, it would return that new length in a signed 32-bit integer variable, thus the length would get either truncated only or...

CVE-2016-8618

The libcurl API function called curlmaprintf before version 7.51.0 can be tricked into doing a double-free due to an unsafe sizet multiplication, on systems using 32 bit sizet variables...

UBUNTU-CVE-2016-8618

The libcurl API function called curlmaprintf before version 7.51.0 can be tricked into doing a double-free due to an unsafe sizet multiplication, on systems using 32 bit sizet variables...

ir-rescue - A Windows Batch Script To Comprehensively Collect Host Forensic Data

ir-rescue is a lightweight Windows Batch script that collects a myriad of forensic data from 32-bit and 64-bit Windows systems while respecting the order of volatility and artifacts that are changed with the execution of the script e.g. , prefetch files. It is intended for incident response use a...

vorbis-tools infinite loop vulnerability

Vorbis-tools is used to manipulate and create Vorbis files.OGG Vorbis is a new audio compression format, similar to existing music formats such as MP3. vorbis-tools infinite loop vulnerability. The designer did not set up a numeric legitimacy check, which led to an overflow in the fseek function ...