Linux in the Stack Clash vulnerabilities that may be exploited by hackers to obtain local root privileges-bug warning-the black bar safety net

Last month, Qualys security researchers in a variety of Unix-based Systems found on called the“Stack Clash”the vulnerability could allow an attacker on a UNIX system to gain root privileges and take over the attack computer. Currently security researchers discovered this flaw and are working with...

Fedora 25 : glibc (2017-79414fefa1) (Stack Clash)

This update addresses CVE-2017-1000366, a vulnerability in the dynamic linker allowing local privilege escalation. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and form...

Debian DLA-997-1 : libffi security update (Stack Clash)

libffi requests an executable stack allowing attackers to more easily trigger arbitrary code execution by overwriting the stack. Please note that libffi is used by a number of other libraries. For Debian 7 'Wheezy', these problems have been fixed in version 3.0.10-3+deb7u1. We recommend that you...

RHEL 5 : kernel (RHSA-2017:1482)

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:1482 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: A flaw was found in the way memory was...

SUSE SLES11 Security Update : kernel (SUSE-SU-2017:1628-1) (Stack Clash)

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2017-1000364: The default stack guard page was too small and could be 'jumped over' by userland programs using more than one page of stack in functions and ...

CentOS 7 : glibc (CESA-2017:1481) (Stack Clash)

An update for glibc is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

CentOS 6 : kernel (CESA-2017:1486) (Stack Clash)

An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

SUSE SLES12 Security Update : kernel (SUSE-SU-2017:1618-1) (Stack Clash)

The SUSE Linux Enterprise 12 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2017-1000364: The default stack guard page was too small and could be 'jumped over' by userland programs using more than one page of stack in functions and so...

RHEL 6 : glibc (RHSA-2017:1480) (Stack Clash)

An update for glibc is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

Scientific Linux Security Update : kernel on SL7.x x86_64 (20170619) (Stack Clash)

Security Fixes : - A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap or different memory region and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory...

SUSE SLES11 Security Update : kernel (SUSE-SU-2017:1613-1) (Stack Clash)

The SUSE Linux Enterprise 11 SP3 kernel was updated to receive various security fixes. The following security bugs were fixed : - CVE-2017-1000364: The default stack guard page was too small and could be 'jumped over' by userland programs using more than one page of stack in functions and so lead...

RHEL 5 / 6 / 7 : glibc (RHSA-2017:1479)

The remote Redhat Enterprise Linux 5 / 6 / 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2017:1479 advisory. The glibc packages provide the standard C libraries libc, POSIX thread libraries libpthread, standard math libraries libm, and the name servi...

Amazon Linux AMI : kernel (ALAS-2017-845) (Stack Clash)

An issue was discovered in the size of the stack guard page on Linux, specifically a 4k stack guard page is not sufficiently large and can be jmp'ed over, this affects Linux Kernel versions 4.11.5 and earlier the stackguard page was introduced in 2010. CVE-2017-1000364 The offset2lib patch as use...

Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20170619) (Stack Clash)

Security Fixes : - A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap or different memory region and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory...

Ubuntu 17.04 : linux-meta-raspi2, linux-raspi2 vulnerabilities (USN-3325-1) (Stack Clash)

It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges CVE-2017-1000364 Roee Hay...

Debian DSA-3888-1 : exim4 - security update (Stack Clash)

The Qualys Research Labs discovered a memory leak in the Exim mail transport agent. This is not a security vulnerability in Exim by itself, but can be used to exploit a vulnerability in stack handling. For the full details, please refer to their advisory published at:...

Ubuntu 17.04 : linux, linux-meta vulnerabilities (USN-3324-1) (Stack Clash)

It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges CVE-2017-1000364 Roee Hay...

Debian DSA-3886-1 : linux - security update (Stack Clash)

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. - CVE-2017-7487 Li Qiang reported a reference counter leak in the ipxitfioctl function which may result into a use-after-free vulnerability, triggerabl...

Ubuntu 16.10 : linux, linux-meta vulnerabilities (USN-3326-1) (Stack Clash)

It was discovered that a use-after-free flaw existed in the filesystem encryption subsystem in the Linux kernel. A local attacker could use this to cause a denial of service system crash. CVE-2017-7374 It was discovered that the stack guard page for processes in the Linux kernel was not...

RHEL 6 : kernel (RHSA-2017:1486) (Stack Clash)

An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...