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Security Bulletins
Latest Malware Updates

Infostealer.Posteal

02/26/2015

Downloader.Busadom

02/26/2015

Trojan.Ladocosm

02/26/2015

SONAR.SuspDocRun

02/25/2015

SONAR.SuspHelpRun

02/25/2015

Matthew Garrett: Samsung notebooks UEFI-firmware gets locked when memory is full

Matthew Garrett: Samsung notebooks UEFI-firmware gets locked when memory is full

Matthew Garrett, one of the authors of Linux kernel, conducted a study of Samsung notebooks that met a problem with UEFI-firmware. Security expert published results stating that firmware got blocked only when the UEFI variable store became 50% full. That, in turn, caused to the malfunction of the device.

Garrett said that the problem was discovered only in Samsung 300E5C, NP700Z5C, NP700Z7C, and 530U3C notebooks. He also stated that the block occurred when downloading Linux, using UEFI.

The researcher found a solution: users have to execute “mount -t pstore /sys/fs/pstore /sys/fs/pstore” command. He recommends removing all unnecessary files and rebooting machine. After that, according to Matthew, the machine should work normally.

UEFI implementations generally handle variable deletion by flagging the space as reclaimable rather than immediately making it available again. You need to reboot in order for the firmware to garbage collect it. Some firmware seems to require two reboot cycles to do this properly, stated Garrett.

Security expert also created a patch for the bug. You may find it here.

(c) Naked Security


Security Advisories Database

Remote Code Execution Vulnerability in Microsoft OpenType Font Driver

A remote attacker can execute arbitrary code on the target system.

07/21/2015

SQL Injection Vulnerability in Piwigo

SQL inection vulnerability has been discovered in Piwigo.

02/05/2015

Cross-site Scripting Vulnerability in DotNetNuke

A cross-site scripting (XSS) vulnerability has been discovered in DotNetNuke.

02/05/2015

Cross-site Scripting Vulnerability in Hitachi Command Suite

A cross-site scripting vulnerability was found in Hitachi Command Suite.

02/02/2015

Denial of service vulnerability in FreeBSD SCTP RE_CONFIG Chunk Handling

An attacker can perform a denial of service attack.

01/30/2015

Denial of service vulnerability in Apache Traffic Server HTTP TRACE Max-Forwards

An attacker can perform a denial of service attack.

01/30/2015

Denial of service vulnerability in MalwareBytes Anti-Exploit "mbae.sys"

An attacker can perform a denial of service attack.

01/30/2015

Denial of service vulnerability in Linux Kernel splice

An attacker can perform a denial of service attack.

01/29/2015

Denial of service vulnerability in Python Pillow Module PNG Text Chunks Decompression

An attacker can perform a denial of service attack.

01/20/2015