CVSS: 4.9EPSS: 0%CPEs: 3EXPL: 0CVE-2021-20266 – rpm: missing length checks in hdrblobInit()
https://notcve.org/view.php?id=CVE-2021-20266
A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability. Se detectó un fallo en RPM en la función hdrblobInit() en el archivo lib/header.c. Este fallo permite a un atacante que puede modificar el rpmdb causar una lectura fuera de límites. • https://bugzilla.redhat.com/show_bug.cgi?id=1927741 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC https://security.gentoo.org/glsa/202107-43 https://access.redhat.com/security/cve/CVE-2021-20266 • CWE-125: Out-of-bounds Read •
CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0CVE-2017-7500
https://notcve.org/view.php?id=CVE-2017-7500
It was found that rpm did not properly handle RPM installations when a destination path was a symbolic link to a directory, possibly changing ownership and permissions of an arbitrary directory, and RPM files being placed in an arbitrary destination. An attacker, with write access to a directory in which a subdirectory will be installed, could redirect that directory to an arbitrary location and gain root privilege. Se ha detectado que rpm no manejaba correctamente las instalaciones RPM cuando una ruta de destino era un enlace simbólico a un directorio, posiblemente cambiando la propiedad y los permisos de un directorio arbitrario y los archivos RPM se colocaban en un destino arbitrario. Un atacante con acceso de escritura a un directorio en el que se instalará un subdirectorio podría redirigir ese directorio a una ubicación arbitraria y obtener privilegios root. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7500 https://github.com/rpm-software-management/rpm/commit/c815822c8bdb138066ff58c624ae83e3a12ebfa9 https://github.com/rpm-software-management/rpm/commit/f2d3be2a8741234faaa96f5fd05fdfdc75779a79 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •