CVE-2018-12476 – obs-service-extract_file's outfilename parameter allows to write files outside of package directory

https://notcve.org/view.php?id=CVE-2018-12476

Relative Path Traversal vulnerability in obs-service-tar_scm of SUSE Linux Enterprise Server 15; openSUSE Factory allows remote attackers with control over a repository to overwrite files on the machine of the local user if a malicious service is executed. This issue affects: SUSE Linux Enterprise Server 15 obs-service-tar_scm versions prior to 0.9.2.1537788075.fefaa74:. openSUSE Factory obs-service-tar_scm versions prior to 0.9.2.1537788075.fefaa74. Una vulnerabilidad de Salto de Ruta Relativa en obs-service-tar_scm de SUSE Linux Enterprise Server versión 15; openSUSE Factory, permite a atacantes remotos con control sobre un repositorio sobrescribir archivos en la máquina del usuario local si un servicio malicioso es ejecutado. Este problema afecta a: obs-service-tar_scm versiones anteriores a 0.9.2.1537788075.fefaa74 de SUSE Linux Enterprise Server versión 15. obs-service-tar_scm versiones anteriores a 0.9.2.1537788075.fefaa74 de openSUSE Factory. • https://bugzilla.suse.com/show_bug.cgi?id=1107944 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-23: Relative Path Traversal •