paravirtualized drivers incautious about shared memory contents

ISSUE DESCRIPTION The compiler can emit optimizations in the PV backend drivers which can lead to double fetch vulnerabilities. Specifically the shared memory between the frontend and backend can be fetched twice during which time the frontend can alter the contents possibly leading to arbitrary...

A step-by-step learn the ROP of the Android ARM 3 2-vulnerability warning-the black bar safety net

ROP stands for Return-oriented programming return-oriented programming this is an advanced memory attack techniques that can be used to bypass the modernoperating systema variety of common defenses such as the memory is not performed and code signing. Before we mainly discussed on linux in this...

The vulnerability of Xen hypervisors, which allows a malicious actor to trigger a service failure

The vulnerability of the hypercallcreatecontinuation function in arch/arm/domain.c of the Xen supervisor is related to security configuration errors. Exploiting this vulnerability allows a local attacker to trigger a service failure through a specially crafted supervisor call...

long running memory operations on ARM

ISSUE DESCRIPTION Certain HYPERVISORmemoryop subops take page order inputs, with so far insufficient enforcement of limits thereof. In particular, for all of XENMEMincreasereservation, XENMEMpopulatephysmap, and XENMEMexchange the order was limited to 9 only for guests without physical devices...

libxl leak of pv kernel and initrd on error

ISSUE DESCRIPTION When constructing a guest which is configured to use a PV bootloader which runs as a userspace process in the toolstack domain e.g. pygrub libxl creates a mapping of the files to be used as kernel and initial ramdisk when building the guest domain. However if building the domain...

CentOS 7 : file (CESA-2015:2155)

Updated file packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity ratings,...

file, python security update

CentOS Errata and Security Advisory CESA-2015:2155 Updated file packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System CVSS...

Oracle Linux 7 : file (ELSA-2015-2155)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-2155 advisory. - fix CVE-2014-8116 - bump the acceptable ELF program headers count to 2048 - fix CVE-2014-0207 - cdfreadshortsector insufficient boundary check - fix...

binutils security, bug fix, and enhancement update

2.23.52.0.1-55 - Add missing delta to patch that fixes parsing corrupted archives. 1162666 2.23.52.0.1-54 - Import patch for PR 18270: Create AArch64 GOT entries for local symbols. 1238783 2.23.52.0.1-51 - Fix incorrectly generated binaries and DSOs on PPC platforms. 1247126 2.23.52.0.1-50 - Fix...

RHEL 7 : file (RHSA-2015:2155)

Updated file packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity ratings,...

Moderate: Red Hat Security Advisory: file security and bug fix update

Updated file packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity ratings,...

Design/Logic Flaw

The hypercallcreatecontinuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service host crash via a preemptible hypercall to the multicall interface...

UBUNTU-CVE-2015-7812

The hypercallcreatecontinuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service host crash via a preemptible hypercall to the multicall interface...

D-Link DIR-880L Buffer Overflow

Advisory Information Title: DIR-880L Buffer overflows in authenticatio and HNAP functionalities. Vendors contacted: William Brown , Patrick Cline [email protected] CVE: None Note: All these security issues have been discussed with the vendor and vendor indicated that they have fixed...

D-Link DIR-890L/R Buffer Overflow

Advisory Information Title: DIR-890L/R Buffer overflows in authentication and HNAP functionalities. Date published: July,17th, 2015 Vendors contacted: William Brown , Patrick Cline [email protected] CVE: None Note: All these security issues have been discussed with the vendor and vendo...

D-Link DIR-890L/R - Multiple Buffer Overflow Vulnerabilities

Advisory Information Title: DIR-890L/R Buffer overflows in authentication and HNAP functionalities. Date published: July,17th, 2015 Vendors contacted: William Brown , Patrick Cline [email protected] CVE: None Note: All these security issues have been discussed with the vendor and vendo...

x86: CPU lockup during exception delivery

ISSUE DESCRIPTION When a benign exception occurs while delivering another benign exception, it is architecturally specified that these would be delivered sequentially. There are, however, cases where this results in an infinite loop inside the CPU, which in the virtualized case can be broken only...

Xen competitive conditions loophole

Xen is an open source virtual machine monitor product developed at the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. A race condition vulnerability exist...

CVE-2015-5291

Heap-based buffer overflow in PolarSSL 1.x before 1.2.17 and ARM mbed TLS formerly PolarSSL 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service client crash and possibly execute arbitrary code via a long hostname to the server name indication SNI...

CVE-2015-8036

Heap-based buffer overflow in ARM mbed TLS formerly PolarSSL 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service client crash and possibly execute arbitrary code via a long session ticket name to the session ticket extension, which is not properly handl...