CVSS: 6.2EPSS: 0%CPEs: 8EXPL: 1CVE-2021-4115 – polkit: file descriptor leak allows an unprivileged user to cause a crash
https://notcve.org/view.php?id=CVE-2021-4115
There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned Se presenta un fallo en polkit que puede permitir a un usuario no privilegiado causar un bloqueo de polkit, debido al agotamiento del descriptor de archivos del proceso. La mayor amenaza de esta vulnerabilidad es la disponibilidad. NOTA: La duración de la interrupción del proceso de polkit está ligada al proceso que falla y a la creación de uno nuevo There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. • http://packetstormsecurity.com/files/172849/polkit-File-Descriptor-Exhaustion.html https://access.redhat.com/security/cve/cve-2021-4115 https://gitlab.com/redhat/centos-stream/rpms/polkit/-/merge_requests/6/diffs?commit_id=bf900df04dc390d389e59aa10942b0f2b15c531e https://gitlab.freedesktop.org/polkit/polkit/-/issues/141 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VGKWCBS6IDZYYDYM2WIWJM5BL7QQTWPF https://www.oracle.com/security-alerts/cpujul2022.html https://access.redhat • CWE-400: Uncontrolled Resource Consumption CWE-403: Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak') •
CVSS: 7.8EPSS: 0%CPEs: 56EXPL: 33CVE-2021-4034 – Red Hat Polkit Out-of-Bounds Read and Write Vulnerability
https://notcve.org/view.php?id=CVE-2021-4034
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine. • https://github.com/dzonerzy/poc-cve-2021-4034 https://github.com/arthepsy/CVE-2021-4034 https://github.com/berdav/CVE-2021-4034 https://www.exploit-db.com/exploits/50689 https://github.com/PwnFunction/CVE-2021-4034 https://github.com/joeammond/CVE-2021-4034 https://github.com/nikaiw/CVE-2021-4034 https://github.com/ryaagard/CVE-2021-4034 https://github.com/Rvn0xsy/CVE-2021-4034 https://github.com/Ayrx/CVE-2021-4034 https://github.com/zhzyker/CVE-2021-4034& • CWE-20: Improper Input Validation CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 1%CPEs: 9EXPL: 23CVE-2021-3560 – Red Hat Polkit Incorrect Authorization Vulnerability
https://notcve.org/view.php?id=CVE-2021-3560
It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se ha detectado que polkit podía ser engañado para omitir las comprobaciones de credenciales para las peticiones de D-Bus, elevando los privilegios del solicitante al usuario root. Este fallo podría ser usado por un atacante local no privilegiado para, por ejemplo, crear un nuevo administrador local. • https://www.exploit-db.com/exploits/50011 https://github.com/secnigma/CVE-2021-3560-Polkit-Privilege-Esclation https://github.com/RicterZ/CVE-2021-3560-Authentication-Agent https://github.com/hakivvi/CVE-2021-3560 https://github.com/WinMin/CVE-2021-3560 https://github.com/0dayNinja/CVE-2021-3560 https://github.com/AssassinUKG/Polkit-CVE-2021-3560 https://github.com/chenaotian/CVE-2021-3560 https://github.com/BizarreLove/CVE-2021-3560 https://github.com/cpu0x00/CVE-2021-3560&# • CWE-754: Improper Check for Unusual or Exceptional Conditions CWE-863: Incorrect Authorization •
CVSS: 7.3EPSS: 0%CPEs: 17EXPL: 0CVE-2019-6133 – polkit: Temporary auth hijacking via PID reuse and non-atomic fork
https://notcve.org/view.php?id=CVE-2019-6133
In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c. En PolicyKit (también conocido como polkit) 0.115, el mecanismo de protección "start time" puede omitirse debido a que fork() no es atómico y, por lo tanto, las decisiones de autorización se cachean incorrectamente. Esto está relacionado con la falta de comprobación de uid en polkitbackend/polkitbackendinteractiveauthority.c. A vulnerability was found in polkit. • http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00049.html http://www.securityfocus.com/bid/106537 https://access.redhat.com/errata/RHSA-2019:0230 https://access.redhat.com/errata/RHSA-2019:0420 https://access.redhat.com/errata/RHSA-2019:0832 https://access.redhat.com/errata/RHSA-2019:2699 https://access.redhat.com/errata/RHSA-2019:2978 https://bugs.chromium.org/p/project-zero/issues/detail?id=1692 https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf https • CWE-284: Improper Access Control CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 9.0EPSS: 0%CPEs: 8EXPL: 4CVE-2018-19788 – polkit: Improper handling of user with uid > INT_MAX leading to authentication bypass
https://notcve.org/view.php?id=CVE-2018-19788
A flaw was found in PolicyKit (aka polkit) 0.115 that allows a user with a uid greater than INT_MAX to successfully execute any systemctl command. Se ha detectado un fallo en PolicyKit (también conocido como polkit) 0.115 que permite que un usuario con una uid mayor que INT_MAX ejecute con éxito cualquier comando systemctl. • https://github.com/AbsoZed/CVE-2018-19788 https://github.com/d4gh0s7/CVE-2018-19788 https://github.com/jhlongjr/CVE-2018-19788 https://access.redhat.com/errata/RHSA-2019:2046 https://access.redhat.com/errata/RHSA-2019:3232 https://bugs.debian.org/915332 https://gitlab.freedesktop.org/polkit/polkit/issues/74 https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html https://security.gentoo.org/glsa/201908-14 https://usn.ubuntu.com/3861-1 https://usn.ubu • CWE-20: Improper Input Validation CWE-287: Improper Authentication •