Dude, where’s my heap?

Guest posted by Ivan Fratric, spraying 1TB of memory The ability to place controlled content to a predictable location in memory can be an important primitive in exploitation of memory corruption vulnerabilities. A technique that is commonly used to this end in browser exploitation is heap...

Alcatel-Lucent OmniSwitch Web Interface Weak Session ID Vulnerability

Vulnerability in the management web interface of an Alcatel-Lucent OmniSwitch 6450. This interface uses easily guessable session IDs, which allows attackers to authenticate as a currently logged-in user and perform administrative tasks Details ======= Product: Alcatel-Lucent OmniSwitch 6450, 6250...

kernel security and bug fix update

kernel 2.6.18-406.0.0.0.1 - netfront fix ring buffer index go back led vif stop orabug 18272251 - net fix tcptrimhead James Li orabug 14512145, 19219078 - ocfs2: dlm: fix recovery hung Junxiao Bi orabug 13956772 - i386: fix MTRR code Zhenzhong Duan orabug 15862649 - oprofile x86, mm: Add...

Pixiewps - Bruteforce Offline the WPS Pin (Pixie Dust Attack)

Pixiewps is a tool written in C used to bruteforce offline the WPS pin exploiting the low or non-existing entropy of some APs pixie dust attack. It is meant for educational purposes only. All credits for the research go to Dominique Bongard. DEPENDENCIES Pixiewps requires libssl. To install it:...

Poor Crypto Dooms Blockchain Android App

Shoddy crypto is being blamed for the loss of Bitcoin for an unnamed number of Blockchain users. Blockchain, one of the busiest Bitcoin wallets, on Thursday released a security update for its Android app correcting the situation. “In rare circumstances, certain versions of the Android operating...

Juniper Networks Junos OS Insufficient Entropy Vulnerability

Junos OS on QFX3500 and QFX3600 platforms is prone to a insufficient entropy vulnerability. SPDX-FileCopyrightText: 2015 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 CPE...

Scientific Linux Security Update : kernel on SL7.x x86_64 (20150512)

A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a...

RHEL 7 : kernel (RHSA-2015:0987)

Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating,...

Important: Red Hat Security Advisory: kernel security and bug fix update

Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating,...

kernel security and bug fix update

3.10.0-229.4.2 - Oracle Linux certificates Alexey Petrenko 3.10.0-229.4.2 - x86 crypto: aesni - fix memory usage in GCM decryption Kurt Stutsman 1213331 1212178 CVE-2015-3331 3.10.0-229.4.1 - crypto x86: sha256ssse3 - also test for BMI2 Herbert Xu 1211484 1201563 - crypto testmgr: fix RNG return...

Linux ASLR mmap weakness: Reducing entropy by half

A bug in Linux ASLR implementation has been found. The issue is that the mmap base address for processes is not properly randomized on some architectures due to an improper bit-mask manipulation. Affected systems have reduced the mmap area entropy of the processes by half. The number of possible...

AMD Bulldozer Linux ASLR weakness: Reducing entropy by 87.5%

A security issue in Linux ASLR implementation which affects some AMD processors has been found. The issue affects to all Linux process even if they are not using shared libraries statically compiled. The problem appears because some mmapped objects VDSO, libraries, etc. are poorly randomized in a...

stunnel crypto vulnerabilities

Entropy pools are reused if fork if used for threading...

Juniper Junos QFX Low Entropy Vulnerability (JSA10678)

According to its self-reported version number, the remote Juniper Junos device is affected by a low entropy vulnerability due to an insufficient number of bytes being collected from the RANDOMINTERRUPT entropy source when the device is first booted, thus resulting in the generation of weak SSH ke...

PT-2017-6668 · Nts +3 · Ntp +3

Name of the Vulnerable Software and Affected Versions: ntp versions 4.2.8px through 4.2.8p2-RC2 ntp versions 4.3.x through 4.3.12 Description: The issue is related to the generation of MD5 keys with insufficient entropy on big endian machines under specific conditions. This might allow remote...

kernel security and bug fix update

kernel 2.6.18-404.0.0.0.1 - net fix tcptrimhead James Li orabug 14512145, 19219078 - ocfs2: dlm: fix recovery hung Junxiao Bi orabug 13956772 - i386: fix MTRR code Zhenzhong Duan orabug 15862649 - oprofile x86, mm: Add getuserpagesfast orabug 14277030 - oprofile export getuserpagesfast function...

stunnel < 5.12 OpenSSL Multiple Vulnerabilities

The version of stunnel installed on the remote host is prior to version 5.12. It is, therefore, affected by the following vulnerabilities in the bundled OpenSSL library : - A flaw exists in the DTLSv1listen function due to state information being preserved in the SSL object from one invocation to...

Low: kernel

Issue Overview: It was reported that stack address is not properly randomized on some 64 bit architectures due to an integer overflow. The stack entropy of the processes is reduced by four. Affected Packages: kernel Issue Correction: Run yum update kernel or yum update --advisory ALAS-2015-491 to...

Vulnerability in OpenSSL - Handshake with unseeded PRNG

Under certain conditions an OpenSSL 1.0.2 client can complete a handshake with an unseeded PRNG. If the handshake succeeds then the client random that has been used will have been generated from a PRNG with insufficient entropy and therefore the output may be predictable. Found by Matt Caswell...

[ MDVSA-2015:008 ] pwgen

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Mandriva Linux Security Advisory MDVSA-2015:008 http://www.mandriva.com/en/support/security/ Package : pwgen Date : January 8, 2015 Affected: Business Server 1.0 Problem Description: Updated pwgen package fixes security vulnerabilities: Pwgen was foun...