CVSS: 9.8EPSS: 0%CPEs: 3EXPL: 2CVE-2016-2338
https://notcve.org/view.php?id=CVE-2016-2338
An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow. Se presenta una vulnerabilidad de desbordamiento de pila explotable en la función Psych::Emitter start_document de Ruby. En la función Psych::Emitter start_document la asignación de "head" del buffer de heap es realizada en base a la longitud del array de etiquetas. • https://github.com/SpiralBL0CK/CVE-2016-2338-nday http://www.talosintelligence.com/reports/TALOS-2016-0032 https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html https://security.netapp.com/advisory/ntap-20221228-0005 • CWE-787: Out-of-bounds Write •
CVSS: 5.3EPSS: 1%CPEs: 5EXPL: 0CVE-2019-16254 – ruby: HTTP response splitting in WEBrick
https://notcve.org/view.php?id=CVE-2019-16254
Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF. Ruby versiones hasta 2.4.7, versiones 2.5.x hasta 2.5.6 y versiones 2.6.x hasta 2.6.4, permite HTTP Response Splitting. Si un programa que utiliza WEBrick inserta información no segura en el encabezado de respuesta, un atacante puede explotarlo para insertar un carácter newline para dividir un encabezado e inyectar contenido malicioso para engañar a los clientes. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html https://hackerone.com/reports/331984 https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html https://seclists.org/bugtraq/2019/Dec/31 https://seclists.org/bugtraq/2019/Dec/32 https://security • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') •
CVSS: 9.8EPSS: 0%CPEs: 13EXPL: 0CVE-2018-16395 – ruby: OpenSSL::X509:: Name equality check does not work correctly
https://notcve.org/view.php?id=CVE-2018-16395
An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations. Se ha descubierto un problema en la biblioteca OpenSSL en Ruby, en versiones anteriores a la 2.3.8, versiones 2.4.x anteriores a la 2.4.5, versiones 2.5.x anteriores a la 2.5.2 y versiones 2.6.x anteriores a la 2.6.0-preview3. • http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securitytracker.com/id/1042105 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2018:3738 https://access.redhat.com/errata/RHSA-2019:1948 https://access.redhat.com/errata/RHSA-2019:2565 https://hackerone.com/reports/387250 https://lists.debian.org/debian-lts • CWE-295: Improper Certificate Validation •
CVSS: 8.1EPSS: 0%CPEs: 16EXPL: 0CVE-2018-16396 – ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives
https://notcve.org/view.php?id=CVE-2018-16396
An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats. Se ha descubierto un problema en Ruby, en versiones anteriores a la 2.3.8, versiones 2.4.x anteriores a la 2.4.5, versiones 2.5.x anteriores a la 2.5.2 y versiones 2.6.x anteriores a la 2.6.0-preview3. No contamina las cadenas que resultan de desempaquetar cadenas contaminadas con algunos formatos. • http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securitytracker.com/id/1042106 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2019:2028 https://hackerone.com/reports/385070 https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html https://security.netapp.com/advisory/ntap-20190221-0002 https://usn • CWE-20: Improper Input Validation •
CVSS: 7.5EPSS: 0%CPEs: 16EXPL: 0CVE-2018-8777 – ruby: DoS by large request in WEBrick
https://notcve.org/view.php?id=CVE-2018-8777
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption). En Ruby, en versiones anteriores a la 2.2.10, versiones 2.3.x anteriores a la 2.3.7, versiones 2.4.x anteriores a la 2.4.4, versiones 2.5.x anteriores a la 2.5.1 y la versión 2.6.0-preview1, un atacante puede pasar una petición HTTP larga con una cabecera manipulada al servidor WEBrick o un cuerpo manipulado al servidor/manipulador WEBrick y provocar una denegación de servicio (consumo de memoria). It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory. • http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securityfocus.com/bid/103683 http://www.securitytracker.com/id/1042004 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2019:2028 https://access.redhat.com/errata/RHSA-2020:0542 https://access.redhat.com/errata/RHSA-2020:0591 https://access.redhat.com/errata&#x • CWE-400: Uncontrolled Resource Consumption •