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CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 1

24 May 2017 — An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition. Se descubrió un problema en Oniguruma versión 6.2.0, como es usado en Oniguruma-mod en Ruby hasta versión 2.4.1 y mbstring en PHP hasta versión 7... • https://access.redhat.com/errata/RHSA-2018:1296 • CWE-476: NULL Pointer Dereference CWE-787: Out-of-bounds Write •

CVSS: 9.8EPSS: 0%CPEs: 3EXPL: 1

24 May 2017 — An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), ... • https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029f • CWE-787: Out-of-bounds Write •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0

03 Apr 2017 — The parse_char_class function in regparse.c in the Onigmo (aka Oniguruma-mod) regular expression library, as used in Ruby 2.4.0, allows remote attackers to cause a denial of service (deep recursion and application crash) via a crafted regular expression. La función parse_char_class en regparse.c en la Onigmo (también conocida como Oniguruma-mod) libreria de expresión regular,como se utiliza en Ruby 2.4.0, permite a atacantes remotos provocar una denegación de servicio (recursión profunda y caída de la aplic... • http://www.securityfocus.com/bid/97304 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 0%CPEs: 23EXPL: 2

29 Mar 2017 — DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names. DL::dlopen en Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 en versiones anteriores a patchlevel 648, y 2.1 en versiones anteriores a 2.1.8 abre librerías con nombres contaminados. It was discovered that Ruby DL::dlopen incorrectly handled opening libraries. An attacker could possibly use this issue to open libraries with tainted names. This issue only applied to Ubuntu 14.04 LTS. • https://github.com/vpereira/CVE-2009-5147 • CWE-20: Improper Input Validation CWE-267: Privilege Defined With Unsafe Actions •

CVSS: 9.8EPSS: 3%CPEs: 2EXPL: 1

06 Jan 2017 — Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as "retval" argument can cause arbitrary code execution. Existe un tipo de confusión en el método de clase _cancel_eval Ruby's TclTkIp. El atacante que pasa un tipo diferente de objeto que una String como argumento "retval" puede provocar la ejecución de código arbitrario. It was discovered that Ruby DL::dlopen incorrectly handled opening libraries. • http://www.securityfocus.com/bid/91233 •

CVSS: 9.8EPSS: 2%CPEs: 2EXPL: 1

06 Jan 2017 — Type confusion exists in two methods of Ruby's WIN32OLE class, ole_invoke and ole_query_interface. Attacker passing different type of object than this assumed by developers can cause arbitrary code execution. Existe un tipo de confusión en dos métodos de la clase WIN32OLE de Ruby, ole_invoke y ole_query_interface. El atacante que pasa un diferente tipo de objeto del que es asumido por los desarrolladores puede provocar la ejecución de código arbitrario. • http://www.talosintelligence.com/reports/TALOS-2016-0029 •

CVSS: 9.8EPSS: 1%CPEs: 2EXPL: 1

06 Jan 2017 — An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby. In Fiddle::Function.new "initialize" heap buffer "arg_types" allocation is made based on args array length. Specially constructed object passed as element of args array can increase this array size after mentioned allocation and cause heap overflow. Existe una vulnerabilidad explotable de desbordamiento de memoria dinámica en la funcionalidad Fiddle::Function.new "initialize" de Ruby. E... • http://www.securityfocus.com/bid/91234 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 8.4EPSS: 0%CPEs: 14EXPL: 0

22 Mar 2016 — The Fiddle::Handle implementation in ext/fiddle/handle.c in Ruby before 2.0.0-p648, 2.1 before 2.1.8, and 2.2 before 2.2.4, as distributed in Apple OS X before 10.11.4 and other products, mishandles tainting, which allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted string, related to the DL module and the libffi library. NOTE: this vulnerability exists because of a CVE-2009-5147 regression. La implementación Fiddle::Handle en ext/fiddl... • http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=796344 • CWE-20: Improper Input Validation CWE-267: Privilege Defined With Unsafe Actions •

CVSS: 8.6EPSS: 1%CPEs: 42EXPL: 0

24 Jun 2015 — RubyGems 2.0.x before 2.0.16, 2.2.x before 2.2.4, and 2.4.x before 2.4.7 does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record, aka a "DNS hijack attack." RubyGems 2.0.x en versiones anteriores a 2.0.16, 2.2.x en versiones anteriores a 2.2.4 y 2.4.x en versiones anteriores a 2.4.7 no valida el nombre de host al recuperar gemas o hacer solicitudes de API, lo que permite a atacantes remotos... • http://blog.rubygems.org/2015/05/14/CVE-2015-3900.html • CWE-254: 7PK - Security Features CWE-345: Insufficient Verification of Data Authenticity •

CVSS: 5.9EPSS: 4%CPEs: 19EXPL: 1

04 May 2015 — verify_certificate_identity in the OpenSSL extension in Ruby before 2.0.0 patchlevel 645, 2.1.x before 2.1.6, and 2.2.x before 2.2.2 does not properly validate hostnames, which allows remote attackers to spoof servers via vectors related to (1) multiple wildcards, (1) wildcards in IDNA names, (3) case sensitivity, and (4) non-ASCII characters. La función Verified_certificate_identity en la extensión OpenSSL en Ruby versiones anteriores a 2.0.0 patchlevel 645, versiones 2.1.x anteriores a 2.1.6 y versiones 2... • https://github.com/vpereira/CVE-2015-1855 • CWE-20: Improper Input Validation •