The Linux vulnerability called Dirty COW (CVE-2016-5195) was first disclosed to the public in 2016. The vulnerability was discovered in upstream Linux platforms such as Redhat, and Android, which kernel is based on Linux. It is categorized as a serious privilege escalation flaw that allows an attacker to gain root access on the targeted system. Dirty COW attacks on Android has been silent since its discovery, perhaps because it took attackers some time to build a stable exploit for major devices. Almost a year later, Trend Micro researchers captured samples of ZNIU (detected as AndroidOS_ZNIU)—the first malware family to exploit the vulnerability on the Android platform.Read More
2016 was the year when ransomware reigned. Bad guys further weaponized extortion into malware, turning enterprises and end users into their cash cows by taking their crown jewels hostage. With 146 families discovered last year compared to 29 in 2015, ransomware’s rapid expansion and development are projected to spur cybercriminals into diversifying and expanding their platforms, capabilities, and techniques in order to accrue more targets.
Indeed, we’ve already seen them testing new waters by tapping the mobile user base, and more recently developing ransomware for other operating systems (OS) then peddling it underground to affiliates and budding cybercriminals. Linux.Encoder (detected by Trend Micro as ELF_CRYPTOR family) was reportedly the first for Linux systems; it targeted Linux web hosting systems through vulnerabilities in web-based plug-ins or software such as Magento’s. In Mac OS X systems, it was KeRanger (OSX_KERANGER)—found in tampered file-sharing applications and malicious Mach-O files disguised as a Rich Text Format (RTF) documents. Their common denominator? Unix.Read More
Dirty COW (designated as CVE-2016-5195) is a Linux vulnerability that was first disclosed to the public in October 2016. It was a serious privilege escalation flaw that allowed an attacker to gain root access on the targeted system; other methods were needed to run any code on the targeted machine. We have found a new way to target Dirty COW that is different from existing attacks.Read More
Mobile threats are trending upward, with vulnerability exploits gaining traction. The silver lining? More of these vulnerabilities are also disclosed, analyzed and detected. This helps better mitigate Android devices from zero-days and malware, enabling OEMs/vendors to more proactively respond to these threats. This is echoed by our continuous initiatives on Android vulnerability research: from June to August 2016, for instance, we’ve discovered and disclosed 13 vulnerabilities to Google. Their real-world impact ranges from battery drainage and unauthorized capture of photos, videos, and audio recordings, to system data leakage and remote control. This is on top of 16 other security flaws we’ve uncovered that were cited in Android/Google’s security bulletins from January to September this year.Read More
Two newly discovered Android vulnerabilities can potentially be used to mess up specific messaging functions in phones and tablets. The first, designated as CVE-2015-3839, may allow attackers to insert malicious messages in the system messaging app and cause it to crash, thus blocking users from sending or receiving messages. Meanwhile, the second flaw, designated as…Read More