XNU POSIX Shared Memory Mapping Issue

XNU: POSIX shared memory mappings have incorrect maximum protection CVE-2018-4435 When the mmap syscall is invoked on a POSIX shared memory segment DTYPEPSXSHM, pshmmmap maps the shared memory segment's pages into the address space of the calling process. It does this with the following code: int...

XNU POSIX Shared Memory Mapping Issue Exploit

Exploit for multiple platform in category local exploits XNU: POSIX shared memory mappings have incorrect maximum protection CVE-2018-4435 When the mmap syscall is invoked on a POSIX shared memory segment DTYPEPSXSHM, pshmmmap maps the shared memory segment's pages into the address space of the...

EulerOS 2.0 SP3 : kernel (EulerOS-SA-2018-1406)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Missing check in fs/inode.c:inodeinitowner does not clear SGID bit on non-directories for non-members.CVE-2018-13405 - fuse-backed file mmap-ed...

XNU - POSIX Shared Memory Mappings have Incorrect Maximum Protection

When the mmap syscall is invoked on a POSIX shared memory segment DTYPEPSXSHM, pshmmmap maps the shared memory segment's pages into the address space of the calling process. It does this with the following code: int prot = uap-prot; ... if prot & PROTWRITE && fp-fflag & FWRITE == 0 returnEPERM;...

RHEL 7 : kernel (RHSA-2018:3591)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3591 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: out-of-bounds access in the...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

EulerOS 2.0 SP2 : kernel (EulerOS-SA-2018-1360)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Integer overflow in Linux's createelftables function CVE-2018-14634 - out-of-bounds access in the showtimer function in kernel/time/posix-timers...

glusterfs: remote denial of service of gluster volumes via posix_get_file_contents function in posix-helpers.c

It was found that an attacker could issue a xattr request via glusterfs FUSE to cause gluster brick process to crash which will result in a remote denial of service. If gluster multiplexing is enabled this will result in a crash of multiple bricks and gluster volumes...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

kernel: out-of-bound access in fs/posix_acl.c:get_acl() causes crash with crafted ext4 image

The Linux kernel is vulnerable to an out-of-bound access bug in the fs/posixacl.c:getacl function. An attacker could trick a legitimate user or a privileged attacker could exploit this to cause a system crash or other unspecified impact with a crafted ext4 image. Due to the nature of the flaw,...

glibc: Integer overflow in posix_memalign in memalign functions

An integer overflow in the implementation of the posixmemalign in memalign functions in the GNU C Library aka glibc or libc6 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption...

kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c

The timercreate syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn't properly validate the sigevent-sigevnotify field, which leads to out-of-bounds access in the showtimer function...

Unbreakable Enterprise kernel security update

4.14.35-1818.3.3 - net: netfailover: fix typo in netfailoverslaveregister Liran Alon Orabug: 28122110 - virtionet: Extend virtio to use VF datapath when available Sridhar Samudrala Orabug: 28122110 - virtionet: Introduce VIRTIONETFSTANDBY feature bit Sridhar Samudrala Orabug: 28122110 - net:...

Denial Of Service (DoS)

libglusterfs.so is vulnerable to denial of serviceDoS. The attack exists because the function posixgetfilecontents in posix-helpers.c does not restrict a xattr request using glusterfs FUSE, causing a gluster brick process to crash...

SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:2776-1)

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.155 to receive various security and bugfixes. The following security bugs were fixed : CVE-2018-13093: Prevent NULL pointer dereference and panic in lookupslow on a NULL inode-iops pointer when doing pathwalks on a corrupted xfs image. Th...

Red Hat glusterfs server posix-helpers.c file denial of service vulnerability

Red Hat glusterfs server is an open source distributed file system from Red Hat Red Hat. The system is mainly for media streaming , data analysis and other data and bandwidth intensive tasks to create large-scale distributed storage solutions. A denial of service vulnerability exists in the...