shopify-scripts: SIGSEGV - mrb_vm_exec - line:1681

PoC: ------------------- The following code triggers the bug attached as testmrbvmexec1681.rb: def try yield ensure yield end a=lambda do a.try do return end end.call Mirb - Debug: ------------------- gdb r testmrbvmexec1678.rb The program being debugged has been started already. Start it from th...

shopify-scripts: SIGSEGV - mrb_check_intern_str() - NullPointer

PoC --------------------- The following code triggers the bug attached as mrbvmexec.rb: def tostr $s.replace""end $s="" class Test00espondTo end Test00espondTo.respondto?0 Crash - mirb --------------------- x@x:/Desktop/research/mruby/bin$ ./mirb mrbcheckinternstr.rb mirb - Embeddable Interactive...

shopify-scripts: heap-buffer-overflow on mruby

Test case: A = 'z' C = 'a','a','a','a','a','a','a','a','a','a' I = C,'a','a','a','a','a','a','a','a','a' J = I,'a','a','a','a','a','a','a','a','a' M = A,A,A,J for a in M do AA end IMPACT ASAN report this as heap-buffer-overflow, and it crashed on 0 memcpysse2unaligned at...

Internet Bug Bounty: Invalid parameter in memcpy function trough openssl_pbkdf2

Upstream: https://bugs.php.net/bug.php?id=72776 Summary: ------------ When keylength parameter is greater than 0x7fffffff, size parameter is interpreted as negative in memcpy, inside PKCS5PBKDF2HMAC function libcrypto.so. This issue happens only in PHP 5.6 branch. PHP 7.0 avoids this issue trough...

Internet Bug Bounty: Stack Buffer Overflow in GD dynamicGetbuf

Stack-based buffer over flow in GD dynamicGetbuf - Vulnerable function: imagecreatefromstring - Bug has been reported: https://bugs.php.net/bug.php?id=73280 - Submitted a patch and accepted: https://github.com/php/php-src/commit/cc08cbc84d46933c1e9e0149633f1ed5d19e45e9 - Impact: Remotely...

imagemagick mogrify global buffer overflow Vulnerability

Exploit for windows platform in category remote exploits imagemagick identify suffers of a global buffer overflow issue, which I reported and has been patched, you can find a reproducer in the github bug tracker issue link issue: https://github.com/ImageMagick/ImageMagick/issues/280 patch:...

Stable Channel Update for Desktop

The stable channel has been updated to 53.0.2785.143 for Windows, Mac, and Linux. This will roll out over the coming days/weeks. Security Fixes and Rewards Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, Control Flow Integrity or LibFuzzer. Note: Access to bug...

Internet Bug Bounty: PHP Integer Overflow in gdImageWebpCtx

PHP Integer Overflow in gdImageWebpCtx 1. Affected Version + PHP 7.0.10 2. Credit This vulnerability was discovered by Ke Liu of Tencent's Xuanwu LAB. 3. Testing Environments + OS: Ubuntu + PHP: 7.0.10 + Compiler: Clang + CFLAGS: -g -O0 -fsanitize=address 4. PoC 5. Vulnerability Details...

Internet Bug Bounty: CVE-2016-7418 PHP Out-Of-Bounds Read in php_wddx_push_element

CVE-2016-7418 PHP Out-Of-Bounds Read in phpwddxpushelement 1. Affected Version + PHP 7.0.10 + PHP 5.6.25 2. Credit This vulnerability was discovered by Ke Liu of Tencent's Xuanwu LAB. 3. Testing Environments + OS: Ubuntu + PHP: 7.0.10 + Compiler: Clang + CFLAGS: -g -O0 -fsanitize=address 4. PoC...

Internet Bug Bounty: CVE-2016-3183 OpenJPEG sycc422_to_rgb Out-of-Bounds Read Vulnerability

CVE-2016-3183 OpenJPEG sycc422torgb Out-of-Bounds Read Vulnerability 1. About OpenJPEG OpenJPEG is an open-source JPEG 2000 codec written in C language. It's widely used in lots of Linux OSes such as Ubuntu, RedHat, Debian, Fedora, and so on. The official repository of the OpenJPEG project is...

Stable Channel Update for Desktop

The stable channel has been updated to 52.0.2743.116 for Windows, Mac, and Linux. This will roll out over the coming days/weeks. Security Fixes and Rewards Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictio...

Stable Channel Update

The stable channel has been updated to 51.0.2704.79 for Windows, Mac, and Linux. Security Fixes and Rewards Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library th...

Graphite2 - TtfUtil::CmapSubtable4NextCodepoint Heap Based Overread

Exploit for multiple platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=755 The following crash due to a heap-based buffer overread can be observed in an ASAN build of the standard Graphite2 gr2FontTest utility git trunk, triggered with the following...

php -- multiple vulnerabilities

The PHP Group reports: Fileinfo: Fixed bug 71527 Buffer over-write in finfoopen with malformed magic file. mbstring: Fixed bug 71906 AddressSanitizer: negative-size-param -1 in mbflstrcut. Phar: Fixed bug 71860 Invalid memory write in phar on filename with \0 in name. SNMP: Fixed bug 71704...

Wireshark - dissect_ber_integer Static Out-of-Bounds Write

Exploit for multiple platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=750 The following crash due to a static memory out-of-bounds write can be observed in an ASAN build of Wireshark current git master, by feeding a malformed file to tshark "$...

Stable Channel Update

The Chrome team is delighted to announce the promotion of Chrome 49 to the stable channel for Windows, Mac and Linux. Chrome 49.0.2623.75 contains a number of fixes and improvements -- a list of changes is available in the log. Watch out for upcoming Chrome and Chromium blog posts about new...

libxml2 - xmlDictAddString Heap Based Buffer Overread

Exploit for linux platform in category dos / poc Source: https://code.google.com/p/google-security-research/issues/detail?id=637 The following crash due to a heap-based out-of-bounds memory read can be observed in an ASAN build of latest stable libxml2 2.9.3, released 4 days ago, by feeding a...

libxml2 - xmlParseEndTag2 Heap Buffer Overread

libxml2 - xmlParseEndTag2 Heap Buffer Overread Source: https://code.google.com/p/google-security-research/issues/detail?id=638 The following crash due to a heap-based out-of-bounds memory read can be observed in an ASAN build of latest stable libxml2 2.9.3, released 4 days ago, by feeding a...

libxml2 - xmlParserPrintFileContextInternal Heap Buffer Overread

Source: https://code.google.com/p/google-security-research/issues/detail?id=639 The following crash due to a heap-based out-of-bounds memory read can be observed in an ASAN build of latest stable libxml2 2.9.3, released 4 days ago, by feeding a malformed file to xmllint "$ ./xmllint /path/to/file...

Wireshark - vwr_read_s2_s3_W_rec Heap Buffer Overflow

Source: https://code.google.com/p/google-security-research/issues/detail?id=647 The following crash due to a heap-based buffer overflow can be observed in an ASAN build of Wireshark current git master, by feeding a malformed file to tshark "$ ./tshark -nVxr /path/to/file": --- cut ---...