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Files from Tavis Ormandy

Email addresstaviso at google.com
First Active2006-10-09
Last Active2022-12-06
Ubuntu Ghostscript Failed Fix
Posted Nov 30, 2018
Authored by Tavis Ormandy, Google Security Research

The fix Ubuntu applied to address the Ghostscript vulnerability identified in CVE-2018-16510 appears to be insufficient.

tags | exploit
systems | linux, ubuntu
advisories | CVE-2018-16510
SHA-256 | 0ac0bf39a81253812182b1698273af4235df1fa484a59f5032b8a187be3fe340
Ghostscript 1Policy Dangerous Access To Operator
Posted Oct 18, 2018
Authored by Tavis Ormandy, Google Security Research

Ghostscript has an issues where callers of a procedure are not forced to be properly marked as executeonly or pseudo-operators, allowing for the ability to take complete control of it.

tags | advisory
advisories | CVE-2018-18284
SHA-256 | c212335a3050997bb3269410331972bd215ee205ac25561281f6b950ad7bb670
Ghostscript .loadfontloop Exposed System Operators
Posted Oct 15, 2018
Authored by Tavis Ormandy, Google Security Research

Ghostscript suffers from an issue where .loadfontloop exposes system operators in the saved execution stack.

tags | advisory
SHA-256 | f56f6e290aa802089d31f8990302cc11931c689380900d290b6f5d35582d007b
Ghostscript executeonly Bypass
Posted Oct 11, 2018
Authored by Tavis Ormandy, Google Security Research

Ghostscript suffers from an executeonly bypass with errorhandler setup.

tags | exploit
advisories | CVE-2018-17961
SHA-256 | 227c5b9392a6f42cf0122d15af332350cf1583e4b26a4c958b0863f5133bbb38
gsview -dSAFER Not Used
Posted Oct 11, 2018
Authored by Tavis Ormandy, Google Security Research

gsview does not run -dSAFER, allowing for the execution of arbitrary code.

tags | advisory, arbitrary
SHA-256 | 6a94b056b7d504ce2307bdccc8d5e12f15fcf4dca1e0b3b87b1b2cb5cbff9723
Ghostscript Exposed System Operators
Posted Oct 11, 2018
Authored by Tavis Ormandy, Google Security Research

Ghostscript has an issue where an error object can expose system operators in the saved execution stack.

tags | advisory
advisories | CVE-2018-18073
SHA-256 | dcb624d6a7e684d9f9b8d63bc29a62e9a0cef57276d16e3a9b3f918f9d52cdba
Ghostscript Failed Restore Command Execution
Posted Sep 6, 2018
Authored by Tavis Ormandy, wvu | Site metasploit.com

This Metasploit module exploits a -dSAFER bypass in Ghostscript to execute arbitrary commands by handling a failed restore (grestore) in PostScript to disable LockSafetyParams and avoid invalidaccess. This vulnerability is reachable via libraries such as ImageMagick, and this module provides the latest vector for Ghostscript.

tags | exploit, arbitrary
advisories | CVE-2018-16509
SHA-256 | 9a18d75e03ae94b3478787aa8898389327fe3597f03bcf6872c9a239283731ae
Ghostscript Command Execution / File Disclosure / Memory Corruption
Posted Aug 23, 2018
Authored by Tavis Ormandy, Google Security Research

Ghostscript suffers from file disclosure, shell command execution, memory corruption, and type confusion bugs.

tags | exploit, shell
SHA-256 | 373c0403a315de2cc28e94cb3d59abdc4fd65812e918d37aaa7564368a57973a
FromDocToPdf Browser History Disclosure
Posted Apr 17, 2018
Authored by Tavis Ormandy, Google Security Research

FromDocToPdf exposes browsing history to all websites.

tags | advisory
SHA-256 | d7f71fcc058ac2ac713d8c08d38d49fb58106fe0ebb0890f7dc2caf14ad47d76
Video Downloader Universal Cross Site Scripting
Posted Apr 6, 2018
Authored by Tavis Ormandy, Google Security Research

The Video Downloader Chrome extension suffers from a universal cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | b5da74f181d1f9d011fafbb0bdf6621ecd124de93f2688457aaf9d1ad4cce81f
glibc LD_AUDIT libmemusage.so RHEL-Based Arbitrary DSO Load Privilege Escalation
Posted Mar 30, 2018
Authored by Marco Ivaldi, Tavis Ormandy, Todor Donev, zx2c4, Brendan Coles | Site metasploit.com

This Metasploit module attempts to gain root privileges on Linux systems by abusing a vulnerability in the GNU C Library (glibc) dynamic linker with libmemusage.so library.

tags | exploit, root
systems | linux
advisories | CVE-2010-3847, CVE-2010-3856
SHA-256 | 866ac744c655ede9c376e4a47945a3a0e64a8cdb089b30ec2822adfef9bb9512
Transmission Torrent Parsing Integer Overflows
Posted Feb 26, 2018
Authored by Tavis Ormandy, Google Security Research

Torrent file parsing in libtransmission suffers from overflow vulnerabilities.

tags | exploit, overflow, vulnerability
SHA-256 | 54ad18d8336156df7524e96c3d9da8e72a4e6da0788daef159edd65d3ca2b6b4
ABRT raceabrt Privilege Escalation
Posted Feb 15, 2018
Authored by Tavis Ormandy | Site metasploit.com

This Metasploit module attempts to gain root privileges on Fedora systems with a vulnerable version of Automatic Bug Reporting Tool (ABRT) configured as the crash handler. A race condition allows local users to change ownership of arbitrary files (CVE-2015-3315). This Metasploit module uses a symlink attack on '/var/tmp/abrt/*/maps' to change the ownership of /etc/passwd, then adds a new user with UID=0 GID=0 to gain root privileges. Winning the race could take a few minutes. This Metasploit module has been tested successfully on ABRT packaged version 2.1.5-1.fc19 on Fedora Desktop 19 x86_64, 2.2.1-1.fc19 on Fedora Desktop 19 x86_64 and 2.2.2-2.fc20 on Fedora Desktop 20 x86_64. Fedora 21 and Red Hat 7 systems are reportedly affected, but untested.

tags | exploit, arbitrary, local, root
systems | linux, redhat, fedora
advisories | CVE-2015-3315
SHA-256 | 01b8bf4ffa026e722d143beb159ab4a57e3e4542e56046a209e14abce7657161
glibc '$ORIGIN' Expansion Privilege Escalation
Posted Feb 10, 2018
Authored by Tavis Ormandy, Brendan Coles | Site metasploit.com

This Metasploit module attempts to gain root privileges on Linux systems by abusing a vulnerability in the GNU C Library (glibc) dynamic linker. glibc ld.so in versions before 2.11.3, and 2.12.x before 2.12.2 does not properly restrict use of the LD_AUDIT environment variable when loading setuid executables which allows control over the $ORIGIN library search path resulting in execution of arbitrary shared objects. This Metasploit module opens a file descriptor to the specified suid executable via a hard link, then replaces the hard link with a shared object before instructing the linker to execute the file descriptor, resulting in arbitrary code execution. The specified setuid binary must be readable and located on the same file system partition as the specified writable directory. This Metasploit module has been tested successfully on glibc version 2.5 on CentOS 5.4 (x86_64), 2.5 on CentOS 5.5 (x86_64) and 2.12 on Fedora 13 (i386). RHEL 5 is reportedly affected, but untested. Some versions of ld.so hit a failed assertion in dl_open_worker causing exploitation to fail.

tags | exploit, arbitrary, root, code execution
systems | linux, fedora, centos
advisories | CVE-2010-3847
SHA-256 | 9a6bdfa99ad597fe9f9517dd0f8bdc9cdeba67fff5dacc64d849ac9bf5bfbfed
glibc LD_AUDIT Arbitrary DSO Load Privilege Escalation
Posted Feb 10, 2018
Authored by Marco Ivaldi, Tavis Ormandy, Todor Donev, zx2c4, Brendan Coles | Site metasploit.com

This Metasploit module attempts to gain root privileges on Linux systems by abusing a vulnerability in the GNU C Library (glibc) dynamic linker. glibc ld.so in versions before 2.11.3, and 2.12.x before 2.12.2 does not properly restrict use of the LD_AUDIT environment variable when loading setuid executables. This allows loading arbitrary shared objects from the trusted library search path with the privileges of the suid user. This Metasploit module uses LD_AUDIT to load the libpcprofile.so shared object, distributed with some versions of glibc, and leverages arbitrary file creation functionality in the library constructor to write a root-owned world-writable file to a system trusted search path (usually /lib). The file is then overwritten with a shared object then loaded with LD_AUDIT resulting in arbitrary code execution. This Metasploit module has been tested successfully on glibc version 2.11.1 on Ubuntu 10.04 x86_64 and version 2.7 on Debian 5.0.4 i386. RHEL 5 is reportedly affected, but untested. Some glibc distributions do not contain the libpcprofile.so library required for successful exploitation.

tags | exploit, arbitrary, root, code execution
systems | linux, debian, ubuntu
advisories | CVE-2010-3847, CVE-2010-3856
SHA-256 | 79d3dcb40544179ef2c545514e54b7352e225d51c57c720672f33d1b717c00e5
Grammarly Auth Token Exposure
Posted Feb 6, 2018
Authored by Tavis Ormandy, Google Security Research

The Grammarly chrome extension (approximately ~20M users) exposes it's auth tokens to all websites, therefore any website can login to grammarly.com as you and access all your documents, history, logs, and all other data.

tags | advisory
SHA-256 | 38a9c89eebeb3e6644a94f0e937ee633297f223f24e55bd0ad56fef9c72d79e0
Apport / ABRT chroot Privilege Escalation
Posted Feb 3, 2018
Authored by Tavis Ormandy, Brendan Coles, StA(c)phane Graber, Ricardo F. Teixeira | Site metasploit.com

This Metasploit module attempts to gain root privileges on Linux systems by invoking the default coredump handler inside a namespace ("container"). Apport versions 2.13 through 2.17.x before 2.17.1 on Ubuntu are vulnerable, due to a feature which allows forwarding reports to a container's Apport by changing the root directory before loading the crash report, causing 'usr/share/apport/apport' within the crashed task's directory to be executed. Similarly, Fedora is vulnerable when the kernel crash handler is configured to change root directory before executing ABRT, causing 'usr/libexec/abrt-hook-ccpp' within the crashed task's directory to be executed. In both instances, the crash handler does not drop privileges, resulting in code execution as root. This Metasploit module has been tested successfully on Apport 2.14.1 on Ubuntu 14.04.1 LTS x86 and x86_64 and ABRT on Fedora 19 and 20 x86_64.

tags | exploit, x86, kernel, root, code execution
systems | linux, fedora, ubuntu
advisories | CVE-2015-1318
SHA-256 | 9c651a9002f5646905fcb8abdec1552897cd260c341ec403e60727c2cf691713
Blizzard Agent RPC Auth DNS Rebinding
Posted Jan 23, 2018
Authored by Tavis Ormandy, Google Security Research

Blizzard's agent rpc authentication mechanism is vulnerable to DNS rebinding attacks.

tags | exploit
SHA-256 | 01e7bdf4703d545404b5ea8d6c13d0e9fc1c4e0a98a205904426f38fbc152873
Transmission RPC Session-ID Mechanism Design Flaw
Posted Jan 12, 2018
Authored by Tavis Ormandy, Google Security Research

The Transmission bittorrent client suffers from an RPC session-id mechanism design flaw.

tags | exploit
SHA-256 | eb5116fc215d9b67c48fcbe0240a784bca401f22dcc20bf7faa2ae78c70be6d1
Microsoft Windows Win32k DC Cache Corruption
Posted Jan 6, 2018
Authored by Tavis Ormandy, Google Security Research

A Microsoft Windows win32k vulnerability has been discovered where using SetClassLong to switch between CS_CLASSDC and CS_OWNDC corrupts DC cache.

tags | exploit
SHA-256 | d07a83757124fecff65bbde70f529b29553e02b3ecba86891ac3d31b9a1e3f28
Keeper Privileged UI Injection
Posted Dec 15, 2017
Authored by Tavis Ormandy, Google Security Research

Microsoft Windows 10 is forcibly installing the Keeper password manager which injects privileged UI's into pages.

tags | exploit
systems | windows
SHA-256 | ae83b2f7f72326bf46c86779b3f209ce03d065a4da2267e20c685c1f25425281
Cisco WebEx GPC Sanitization Bypasses / Command Execution
Posted Jul 18, 2017
Authored by Tavis Ormandy, Google Security Research

Various GPC Sanitization bypasses exist in Cisco WebEx that can permit from arbitrary remote command execution.

tags | exploit, remote, arbitrary
systems | cisco
SHA-256 | 2742e774481d9cd4f1486925a8d6d0f5cd50b3e1c50f16db34aa9fee06887044
Microsoft MsMpEng VFS API Heap Corruption
Posted Jun 24, 2017
Authored by Tavis Ormandy, Google Security Research

The Microsoft MsMpEng mpengine x86 emulator suffers from a heap corruption vulnerability in VFS API.

tags | exploit, x86
SHA-256 | 46362a2418387131b284b6f99ffbd92b63a52b28cf6850b31bc0119ebc171b9f
Samba is_known_pipename() Arbitrary Module Load
Posted May 27, 2017
Authored by H D Moore, Tavis Ormandy, Brendan Coles, steelo | Site metasploit.com

This Metasploit module triggers an arbitrary shared library load vulnerability in Samba versions 3.5.0 to 4.4.14, 4.5.10, and 4.6.4. This Metasploit module requires valid credentials, a writeable folder in an accessible share, and knowledge of the server-side path of the writeable folder. In some cases, anonymous access combined with common filesystem locations can be used to automatically exploit this vulnerability.

tags | exploit, arbitrary
advisories | CVE-2017-7494
SHA-256 | 467d157dc1bbf3f036cc0f63f280fa7c6781fd91ca452708aab53393895c5ba1
Microsoft MsMpEng Privilege Escalation
Posted May 25, 2017
Authored by Tavis Ormandy, Google Security Research

Microsoft MsMpEng suffers from multiple privilege escalation vulnerabilities.

tags | exploit, vulnerability
SHA-256 | b57fb4337aa82768637ff7b8efdf2fef6727f821ca5bfd34a0c7ad06e2c615e7
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