shopify-scripts: segafult in mruby's sprintf - mrb_str_format

The mruby sprintf gem out of scope of mruby-engine can be crashed when using a hostile "width" value in the format string. Exploit Script =========== ruby s = "hello" sprintf"abcdefghijklmnopqrstuvwxyz % 2147483640s", s Here is the core dump: Core was generated by...

shopify-scripts: Denial of service (segfault) due to null pointer dereference in mrb_obj_instance_eval

Introduction ============ Provided PoC segfaults at mrbobjinstanceeval due to null pointer dereference. Proof of concept ================ Attached the poc. Crash report ============ ./sandbox eval.rb ./sandbox:20: BUG Segmentation fault at 0x00000000000003 ruby 2.3.1p112 2016-04-26 x8664-linux-gn...

shopify-scripts: Recursion causing uninitialized memory reads leading to a segfault

The following code produces a segfault without causing a stack overflow, affecting the sandbox: def fnn return ensure if n == 0 else fnn-1 end end fn24 When the n parameter is less than 24, there is no segfault. However, investigating with a memory sanitizer shows that uninitialized read errors...

Updated 389-ds-base packages fix security vulnerability

The "attribute uniqueness" plugin did not properly NULL-terminate an array when building up its configuration if a so called 'old-style' configuration was being used. An attacker, authenticated, but possibly also unauthenticated, could possibly force the plugin to read beyond allocated memory and...

MGASA-2017-0028 Updated 389-ds-base packages fix security vulnerability

The "attribute uniqueness" plugin did not properly NULL-terminate an array when building up its configuration if a so called 'old-style' configuration was being used. An attacker, authenticated, but possibly also unauthenticated, could possibly force the plugin to read beyond allocated memory and...

DEBIAN-CVE-2016-9623

An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service segmentation fault and crash via a crafted HTML page...

Debian DLA-739-1 : jasper security updat

CVE-2016-8691 FPE on unknown address ... jpcdecprocesssiz ... jpcdec.c CVE-2016-8692 FPE on unknown address ... jpcdecprocesssiz ... jpcdec.c CVE-2016-8693 attempting double-free ... memclose ... jasstream.c CVE-2016-8882 segfault / NULL pointer access in jpcpidestroy CVE-2016-9560 stack-based...

shopify-scripts: Segmentation fault due to invalid memory access in codegen when using break with the 127th argument a constant

Crash file is: break 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,CRASH This is 126 0's,...

shopify-scripts: Certain inputs cause tight C-level recursion leading to process stack overflow

Introduction ============ Certain legal Ruby programs can cause a tight recursion on the C-level without using eval while spending very little of the Ruby-level stack. This precludes triggering a Ruby stack overflow exception and eventually leads to a process stack overflow and a segfault. Both...

Debian DLA-732-3 : monit regression update

The update for monit issued as DLA-732-1 causes monit to segfault when using the collector function meant to provide data to M/Monit. This update fixes the regression. For reference the original advisory text follows. Adith Sudhakar discovered a cross-site request forgery CSRF issue in monit, a...

shopify-scripts: Null pointer derefence due to bug in codegen with negation without using value

Crash file is: p case when nil -0 nil end $ ./dev/bin/mruby crash.rb crash.rb:1:3: '' interpreted as argument prefix Segmentation fault: 11 $ lldb ./dev/bin/mruby crash.rb lldb target create "./dev/bin/mruby" Current executable set to './dev/bin/mruby' x8664. lldb settings set -- target.run-args...

[ASA-201611-21] slock: access restriction bypass

Arch Linux Security Advisory ASA-201611-21 ========================================== Severity: Medium Date : 2016-11-21 CVE-ID : CVE-2016-6866 Package : slock Type : access restriction bypass Remote : No Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package slock before...

Fedora 25 : php (2016-03518b366b)

18 Aug 2016 PHP 7.0.10 Core: - Fixed bug php72629 Caught exception assignment to variables ignores references. Laruence - Fixed bug php72594 Calling an earlier instance of an included anonymous class fatals. Laruence - Fixed bug php72581 previous property undefined in Exception after...

Qemu: OOB access in address_space_rw leads to segmentation fault

An out-of-bounds flaw was found in the QEMU emulator built using 'addressspacetranslate' to map an address to a MemoryRegionSection. The flaw could occur while doing pcidmaread/write calls, resulting in an out-of-bounds read-write access error. A privileged user inside a guest could use this flaw...

Internet Bug Bounty: libtiff 4.0.6 segfault / read outside of buffer (CVE-2016-9297)

segfault and read outside of buffer in libtiff 4.0.6 and possibly earlier. This library is baked into web browsers used by millions and also devices like the PlayStation Portable and the iPhone. http://bugzilla.maptools.org/showbug.cgi?id=2590 Reported to the vendor on 7 November 2016: ASAN:SIGSE...

shopify-scripts: Range constructor type confusion DoS

It's possible to crash mruby by redefining the Range class and then using the range literal syntax: Range = Array 1..2.inspect The mrbrangenew function allocates and initializes a range object backed by the RRange struct, however it uses runtime constant lookup to find the Range class object...

shopify-scripts: Undefined method_missing null pointer dereference

It's possible to segfault mruby by undefining BasicObjectmethodmissing in certain cases. There is a fallback methodmissing C function mrbmethodmissing which is called in some cases when the VM fails to look up the methodmissing method: BasicObject.removemethod:methodmissing; 1.foo NoMethodError:...

SUSE SLED12 / SLES12 Security Update : jasper (SUSE-SU-2016:2775-1)

This update for jasper to version 1.900.14 fixes several issues. These security issues were fixed : - CVE-2016-8887: NULL pointer dereference in jp2colrdestroy jp2cod.c bsc1006836 - CVE-2016-8886: memory allocation failure in jasmalloc jasmalloc.c bsc1006599 - CVE-2016-8884,CVE-2016-8885: two NUL...

SUSE SLES11 Security Update : jasper (SUSE-SU-2016:2776-1)

This update for jasper fixes the following issues: Security fixes : - CVE-2016-8887: NULL pointer dereference in jp2colrdestroy jp2cod.c bsc1006836 - CVE-2016-8886: memory allocation failure in jasmalloc jasmalloc.c bsc1006599 - CVE-2016-8884,CVE-2016-8885: two NULL pointer dereferences in...

libreswan security and bug fix update

3.15-8.0.1 - add libreswan-oracle.patch to detect Oracle Linux distro 3.15-8 - Resolves: rhbz1361721 libreswan pluto segfault UPDATED - Resolves: rhbz1276524 USGv6 IKEv2.EN.R.1.1.3.2 case failed due to response to bad INFORMATIONAL request UPDATED - Resolves: rhbz1309764 ipsec barf additional man...