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CVSS: 7.5EPSS: 5%CPEs: 26EXPL: 1

20 Nov 2014 — The REXML parser in Ruby 1.9.x before 1.9.3 patchlevel 551, 2.0.x before 2.0.0 patchlevel 598, and 2.1.x before 2.1.5 allows remote attackers to cause a denial of service (CPU and memory consumption) a crafted XML document containing an empty string in an entity that is used in a large number of nested entity references, aka an XML Entity Expansion (XEE) attack. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-1821 and CVE-2014-8080. El analizador REXML en Ruby 1.9.x anterior a 1.9.... • http://advisories.mageia.org/MGASA-2014-0472.html • CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') •

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

04 Nov 2014 — Off-by-one error in the encodes function in pack.c in Ruby 1.9.3 and earlier, and 2.x through 2.1.2, when using certain format string specifiers, allows context-dependent attackers to cause a denial of service (segmentation fault) via vectors that trigger a stack-based buffer overflow. Error de superación de límite (off-by-one) en la función de codificación ubicada en pack.c en Ruby 1.9.3 y anteriores, y 2.x hasta 2.1.2, cuando se utilizan ciertos especificadores de formato de cadena, permite a atacantes de... • http://advisories.mageia.org/MGASA-2014-0472.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121: Stack-based Buffer Overflow •

CVSS: 7.5EPSS: 5%CPEs: 31EXPL: 1

03 Nov 2014 — The REXML parser in Ruby 1.9.x before 1.9.3-p550, 2.0.x before 2.0.0-p594, and 2.1.x before 2.1.4 allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document, aka an XML Entity Expansion (XEE) attack. El analizador REXML en Ruby 1.9.x anterior a 1.9.3-p550, 2.0.x anterior a 2.0.0-p594, y 2.1.x anterior a 2.1.4 permite a atacantes remotos causar una denegación de servicio (consumo de memoria) a través de un documento XML manipulado, también conocido como un ataque de ... • http://advisories.mageia.org/MGASA-2014-0443.html • CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') •

CVSS: 9.8EPSS: 17%CPEs: 7EXPL: 2

23 Nov 2013 — Heap-based buffer overflow in Ruby 1.8, 1.9 before 1.9.3-p484, 2.0 before 2.0.0-p353, 2.1 before 2.1.0 preview2, and trunk before revision 43780 allows context-dependent attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a string that is converted to a floating point value, as demonstrated using (1) the to_f method or (2) JSON.parse. Desbordamiento de buffer basado en memoria dinámica en Ruby 1.8, 1.9 anteriores a 1.9.3-p484, 2.0 anteriores a 2.0.0-p353, 2.1 ... • https://packetstorm.news/files/id/180519 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Heap-based Buffer Overflow •

CVSS: 5.3EPSS: 8%CPEs: 14EXPL: 0

09 Apr 2013 — lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack. lib/rexml/text.rb en el analizador REXML en Ruby anterior a 1.9.3-p392, permite a atacantes remotos provocar una denegación de servicio (consumo de memoria o caída de la aplicación) a través de nodos de texto manipulados en un documento XML. Aka como ataque XML Entity Expansion ... • http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702525 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 4%CPEs: 9EXPL: 0

28 Nov 2012 — Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815. Ruby (también conocido como CRuby) v1.9 anteriore... • http://2012.appsec-forum.ch/conferences/#c17 • CWE-310: Cryptographic Issues •

CVSS: 7.8EPSS: 10%CPEs: 5EXPL: 0

30 Dec 2011 — Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. Ruby (también conocido como CRuby) anterior a v1.8.7-P357 calcula los valores de hash sin restringir la capacidad de desencadenar colisiones hash predecible, que permite a atacantes dependientes de contexto para causar una denegaci... • http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html • CWE-20: Improper Input Validation •

CVSS: 7.4EPSS: 0%CPEs: 3EXPL: 0

05 Aug 2011 — Ruby before 1.8.6-p114 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900. Ruby en versiones anteriores a la 1.8.6-p114 no resetea la semilla aleatoria después de la creacción de procesos ("forking"), lo que facilita a atacantes, dependiendo del contexto, predecir el valor de números aleatorios basándose... • http://redmine.ruby-lang.org/issues/show/4338 • CWE-310: Cryptographic Issues •

CVSS: 9.1EPSS: 1%CPEs: 12EXPL: 0

05 Aug 2011 — Ruby before 1.8.7-p352 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900. NOTE: this issue exists because of a regression during Ruby 1.8.6 development. Ruby en versiones anteriores a la 1.8.7-p352 no resetea la semilla aleatoria después de la creacción de procesos ("forking"), lo que facilita a atacant... • http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html • CWE-310: Cryptographic Issues •

CVSS: 7.4EPSS: 1%CPEs: 35EXPL: 0

05 Aug 2011 — The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID. La función SecureRandom.random_bytes de lib/securerandom.rb de Ruby en versiones anteriores a 1.8.7-p352 y 1.9.x anteriores a 1.9.2-p290 se basa en valores PID para la inicializaci... • http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html • CWE-20: Improper Input Validation •