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CVSS: 6.1EPSS: 0%CPEs: 17EXPL: 1

CVE-2018-18397 – kernel: userfaultfd bypasses tmpfs file permissions

https://notcve.org/view.php?id=CVE-2018-18397

The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c. La implementación de userfaultfd en el kernel de Linux en versiones anteriores a la 4.17 gestiona de manera incorrecta para ciertas llamadas ioctl UFFDIO_, tal y como queda demostrado al permitir que usuarios locales escriban datos en huecos en un archivo tmpfs (si el usuario tiene acceso de solo lectura a dicho archivo que contiene huecos). Esto está relacionado con fs/userfaultfd.c y mm/userfaultfd.c. A flaw was found in the Linux kernel with files on tmpfs and hugetlbfs. An attacker is able to bypass file permissions on filesystems mounted with tmpfs/hugetlbs to modify a file and possibly disrupt normal system behavior. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1 https://access.redhat.com/errata/RHBA-2019:0327 https://access.redhat.com/errata/RHSA-2019:0163 https://access.redhat.com/errata/RHSA-2019:0202 https://access.redhat.com/errata/RHSA-2019:0324 https://access.redhat.com/errata/RHSA-2019:0831 https://bugs.chromium.org/p/project-zero/issues/detail?id=1700 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87& • CWE-20: Improper Input Validation CWE-863: Incorrect Authorization •

CVSS: 8.2EPSS: 0%CPEs: 3EXPL: 1

CVE-2018-1000863

https://notcve.org/view.php?id=CVE-2018-1000863

A data modification vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in User.java, IdStrategy.java that allows attackers to submit crafted user names that can cause an improper migration of user record storage formats, potentially preventing the victim from logging into Jenkins. Existe una vulnerabilidad de modificación de datos en Jenkins en versiones 2.153 y anteriores, y LTS 2.138.3 y anteriores en User.java e IdStrategy.java que permite que los atacantes envíen nombres de usuario manipulados que pueden provocar la mitigación incorrecta de formatos de almacenamiento de registros de usuario, lo que podría evitar que la víctima inicie sesión en Jenkins. • http://www.securityfocus.com/bid/106176 https://access.redhat.com/errata/RHBA-2019:0024 https://jenkins.io/security/advisory/2018-12-05/#SECURITY-1072 https://www.tenable.com/security/research/tra-2018-43 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVSS: 4.3EPSS: 0%CPEs: 3EXPL: 0

CVE-2018-1000862

https://notcve.org/view.php?id=CVE-2018-1000862

An information exposure vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in DirectoryBrowserSupport.java that allows attackers with the ability to control build output to browse the file system on agents running builds beyond the duration of the build using the workspace browser. Existe una vulnerabilidad de exposición de información en Jenkins en versiones 2.153 y anteriores, y LTS 2.138.3 y anteriores en DirectoryBrowserSupport.java que permite que los atacantes con habilidad para controlar la salida de las builds naveguen por el sistema de archivos en los agentes que ejecutan builds más allá de la duración de la build empleando el navegador del espacio de trabajo. • http://www.securityfocus.com/bid/106176 https://access.redhat.com/errata/RHBA-2019:0024 https://jenkins.io/security/advisory/2018-12-05/#SECURITY-904 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0

CVE-2018-1000864

https://notcve.org/view.php?id=CVE-2018-1000864

A denial of service vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in CronTab.java that allows attackers with Overall/Read permission to have a request handling thread enter an infinite loop. Existe una vulnerabilidad de denegación de servicio (DoS) en Jenkins 2.153 y anteriores y 2.138.3 y anteriores en CronTab.java que permite que los atacantes con el permiso Overall/Read hagan que un hilo de manejo de peticiones entre en bucle infinito. • http://www.securityfocus.com/bid/106176 https://access.redhat.com/errata/RHBA-2019:0024 https://jenkins.io/security/advisory/2018-12-05/#SECURITY-1193 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 10.0EPSS: 97%CPEs: 3EXPL: 2

CVE-2018-1000861 – Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability

https://notcve.org/view.php?id=CVE-2018-1000861

A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way. Existe una vulnerabilidad de ejecución de código en el framework web de Stapler empleando por Jenkins en versiones 2.153 y anteriores, y LTS 2.138.3 y anteriores en stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java que permite que los atacantes invoquen algunos métodos sobre objetos Java mediante el acceso a URL manipuladas que no deberían invocarse de esta forma. A code execution vulnerability exists in the Stapler web framework used by Jenkins • https://github.com/orangetw/awesome-jenkins-rce-2019 https://github.com/smokeintheshell/CVE-2018-1000861 http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html http://www.securityfocus.com/bid/106176 https://access.redhat.com/errata/RHBA-2019:0024 https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595 https://jenkins.io/security/advisory/2019-01-08 https://blog.orange.tw/2019/01/hacking-jenkins-part-1-play-with-dynamic-routing.html https://blog.orange • CWE-502: Deserialization of Untrusted Data •