Ubuntu: Security Advisory (USN-3560-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-3561-1: libvirt update

It was discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This...

UBUNTU-CVE-2018-6551

The malloc implementation in the GNU C Library aka glibc or libc6, from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZEMAX and could return a pointer to a heap region that is smaller than requested, eventually...

CVE-2018-6551

The malloc implementation in the GNU C Library aka glibc or libc6, from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZEMAX and could return a pointer to a heap region that is smaller than requested, eventually...

USN-3542-1: Linux kernel vulnerabilities

Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provide...

Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3540-2)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3540-2 advisory. USN-3540-1 addressed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware...

Scientific Linux Security Update : bind on SL6.x i386/x86_64 (20180122)

Security Fixes : - A use-after-free flaw leading to denial of service was found in the way BIND internally handled cleanup operations on upstream recursion fetch contexts. A remote attacker could potentially use this flaw to make named, acting as a DNSSEC validating resolver, exit unexpectedly wi...

Ubuntu 17.10 : linux vulnerabilities (USN-3541-1) (Meltdown) (Spectre)

Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provide...

Linux/x86 - symlink /bin/sh sh Shellcode (36 bytes)

/The shellcode calls the symlink and makes the link to the /bin/sh in the current dir. size = 36 bytes OS = Linux i386 written by /rootteam/dev0id rootteam.void.ru BITS 32 jmp short callit doit: pop esi xor eax,eax mov byte esi+7,al mov byte esi+10,al mov byte al,83 lea ebx,esi lea ecx,esi+8 int...

Qemu: i386: multiboot OOB access while loading kernel image

Quick Emulator QEMU, compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while loading a kernel image during a guest boot. A user or process could use this flaw to potentially achiev...

Scientific Linux Security Update : Openafs Security Update on SL6.x, SL7.x i386/x86_64 (20171206)

-- Security Fixes : - Certain values transmitted in RX ACK packets were not sanity checked by OpenAFS receiving peers, which could lead to an assertion being triggered during construction of outgoing packets on the same connection, resulting in server process crashes or client kernel panics...

Scientific Linux Security Update : postgresql on SL6.x i386/x86_64 (20171005)

Security Fixes : - It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq's refusal to send an empty password. A remote attacker could potentially use this flaw to gain access to database accounts with empty passwords. CVE-2017-7546...

CVE-2017-14974

The getsyntheticsymtab functions in the Binary File Descriptor BFD library aka libbfd, as distributed in GNU Binutils 2.29, mishandle the failure of a certain canonicalization step, which allows remote attackers to cause a denial of service NULL pointer dereference and application crash via a...

CVE-2017-14974

CVE-2017-14974 affects the Binary File Descriptor (BFD) library in GNU Binutils 2.29. The _get_synthetic_symtab functions mishandle the failure of a canonicalization step, which can trigger a NULL pointer dereference when processing crafted ELF files. This results in a denial of service (applicat...

Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20170926)

Security Fixes : - A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable PIE, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially...

Integer overflow

The getsyntheticsymtab functions in the Binary File Descriptor BFD library aka libbfd, as distributed in GNU Binutils 2.29, interpret a -1 value as a sorting count instead of an error flag, which allows remote attackers to cause a denial of service integer overflow and application crash or possib...

Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20170921)

Security Fixes : - It was found that samba did not enforce 'SMB signing' when certain configuration options were enabled. A remote attacker could launch a man- in-the-middle attack and retrieve information in plain-text. CVE-2017-12150 - An information leak flaw was found in the way SMB1 protocol...

QEMU Integer Overflow Vulnerability

QEMU aka Quick Emulator is a set of simulation processor software developed by French programmer Fabrice Bellard. The software is fast and cross-platform. An integer overflow vulnerability exists in the 'loadmultiboot' function of the hw/i386/multiboot.c file in QEMU. A local attacker can exploit...

Fedora 26 : kernel (2017-6764d16965)

The 4.12.11 stable kernel update contains a number of important fixes across the tree. 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 format it as much as possible...

Qemu: i386: leakage of stack memory to guest in kvmvapic.c

An information-exposure flaw was found in Quick Emulator QEMU in Task Priority Register TPR optimizations for 32-bit Windows guests. The flaw could occur while accessing TPR. A privileged user inside a guest could use this issue to read portions of the host memory...