CVSS: 8.3EPSS: 0%CPEs: 20EXPL: 0CVE-2018-14633 – kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target
https://notcve.org/view.php?id=CVE-2018-14633
A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in the Linux kernel in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. • http://www.securityfocus.com/bid/105388 https://access.redhat.com/errata/RHSA-2018:3651 https://access.redhat.com/errata/RHSA-2018:3666 https://access.redhat.com/errata/RHSA-2019:1946 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14633 https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=1816494330a83f2a064499d8ed2797045641f92c https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=8c39e2699 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2018-16597 – kernel: overlayfs file truncation without permissions
https://notcve.org/view.php?id=CVE-2018-16597
An issue was discovered in the Linux kernel before 4.8. Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem. Se ha descubierto un problema en el kernel de Linux en versiones anteriores a la 4.8. La comprobación de acceso incorrecta de montajes de overlayfs podría ser empleada por los atacantes locales para modificar o truncar archivos en el sistema de archivos subyacente An issue was discovered in the Linux kernel where an incorrect access check in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem. • http://lists.opensuse.org/opensuse-security-announce/2018-10/msg00033.html http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html http://www.securityfocus.com/bid/105394 https://bugzilla.suse.com/show_bug.cgi?id=1106512 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c0ca3d70e8d3cf81e2255a217f7ca402f5ed0862 https://seclists.org/bugtraq/2019/Jul/33 https://security.netapp.com/advisory/ntap-20190204-0001 https://support. • CWE-862: Missing Authorization CWE-863: Incorrect Authorization •
CVSS: 7.8EPSS: 0%CPEs: 13EXPL: 3CVE-2018-17182 – Linux Kernel - VMA Use-After-Free via Buggy vmacache_flush_all() Fastpath Local Privilege Escalation
https://notcve.org/view.php?id=CVE-2018-17182
An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations. Se ha descubierto un problema en el kernel de Linux hasta la versión 4.18.8. La función vmacache_flush_all en mm/vmacache.c manipula incorrectamente los desbordamientos de números de secuencias. • https://www.exploit-db.com/exploits/45497 https://github.com/jas502n/CVE-2018-17182 https://github.com/likescam/CVE-2018-17182 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2 http://www.securityfocus.com/bid/105417 http://www.securityfocus.com/bid/106503 http://www.securitytracker.com/id/1041748 https://access.redhat.com/errata/RHSA-2018:3656 https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2 https: • CWE-416: Use After Free •
CVSS: 7.1EPSS: 0%CPEs: 3EXPL: 1CVE-2018-14641 – kernel: a bug in ip_frag_reasm() can cause a crash in ip_do_fragment()
https://notcve.org/view.php?id=CVE-2018-14641
A security flaw was found in the ip_frag_reasm() function in net/ipv4/ip_fragment.c in the Linux kernel from 4.19-rc1 to 4.19-rc3 inclusive, which can cause a later system crash in ip_do_fragment(). With certain non-default, but non-rare, configuration of a victim host, an attacker can trigger this crash remotely, thus leading to a remote denial-of-service. Se ha encontrado un error de seguridad en la función ip_frag_reasm() en net/ipv4/ip_fragment.c en el kernel de Linux, desde la versión 4.19-rc1 a la 4.19-rc3, lo que puede provocar un posterior cierre inesperado en ip_do_fragment(). Con ciertas configuraciones que no son por defecto, pero que no son raras, de un host víctima, un atacante puede desencadenar este cierre remotamente, conduciendo así a una denegación de servicio (DoS) remota. A security flaw was found in the ip_frag_reasm() function in net/ipv4/ip_fragment.c in the Linux kernel which can cause a later system crash in ip_do_fragment(). • https://access.redhat.com/errata/RHSA-2018:2948 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4 https://seclists.org/oss-sec/2018/q3/248 https://access.redhat.com/security/cve/CVE-2018-14641 https://bugzilla.redhat.com/show_bug.cgi?id=1629636 • CWE-20: Improper Input Validation CWE-456: Missing Initialization of a Variable •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2018-10853 – kernel: kvm: guest userspace to guest kernel write
https://notcve.org/view.php?id=CVE-2018-10853
A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest. Se ha encontrado un error en la forma en la que el hipervisor KVM del kernel de Linux en versiones anteriores a la 4.18 emulaba instrucciones como sgdt/sidt/fxsave/fxrstor. No comprobó el nivel de privilegios actual (CPL) al emular instrucciones sin privilegios. • http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html https://access.redhat.com/errata/RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2043 https://access.redhat.com/errata/RHSA-2020:0036 https://access.redhat.com/errata/RHSA-2020:0103 https://access.redhat.com/errata/RHSA-2020:0179 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e • CWE-250: Execution with Unnecessary Privileges CWE-269: Improper Privilege Management •