ASLR | Breaking Cybersecurity News | The Hacker News

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has warned of active exploitation of a medium-severity flaw affecting Samsung devices. The issue, tracked as  CVE-2023-21492  (CVSS score: 4.4), impacts select Samsung devices running Android versions 11, 12, and 13. The South Korean electronics giant described the issue as an information disclosure flaw that could be exploited by a privileged attacker to bypass address space layout randomization ( ASLR ) protections. ASLR is a  security technique  that's designed to thwart memory corruption and code execution flaws by obscuring the location of an executable in a device's memory. Samsung, in an  advisory  released this month, said it was "notified that an exploit for this issue had existed in the wild," adding it was privately disclosed to the company on January 17, 2023. Other details about how the flaw is being exploited are currently not known, but vulnerabilities in Samsung phones h...

Security researchers have discovered a chip flaw that could nullify hacking protections for millions of devices regardless of their operating system or application running on them, and the worse — the flaw can not be entirely fixed with any mere software update. The vulnerability resides in the way the memory management unit (MMU), a component of many CPUs, works and leads to bypass the Address Space Layout Randomization (ASLR) protection. ASLR is a crucial security defense deployed by all modern operating systems from Windows and Linux to macOS, Android, and the BSDs. In general, ASLR is a memory protection mechanism which randomizes the location where programs run in a device's memory. This, in turn, makes it difficult for attackers to execute malicious payloads in specific spots in memory when exploiting buffer overflows or similar bugs. In short, for attackers, it's like an attempt to burglarize a house blindfolded. But now a group of researchers, known as VUSe...

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A critical code-execution vulnerability almost affecting everyone those are not running the most updated version of Google Android , i.e. Android version 4.4 also known as KitKat. After nine months of vulnerability disclosure to the Android security team, researchers of the Application Security team at IBM have finally revealed all the possible details of a serious code-execution vulnerability that still affects the Android devices running versions 4.3 and earlier, which could allow attackers to exfiltrate sensitive information from the vulnerable devices. " Considering Android's fragmented nature and the fact that this was a code-execution vulnerability, we decided to wait a bit with the public disclosure ," said Roee Hay, a security research group leader at IBM. The researchers found the stack buffer overflow vulnerability that resides in the Android's KeyStore storage service, which according to the Android developers' website is the service code running in Androi...

Microsoft has issued a temporary fix for a 0day vulnerability that can be exploited to install malware via infected Word documents. A Zero-day Remote code execution flaw, which has been dubbed CVE-2013-3906 , exploits a vulnerability in a Microsoft graphics component, to target Microsoft Office users running Windows Vista and Windows Server 2008. " The vulnerability is a remote code execution vulnerability that exists in the way affected components handle specially crafted TIFF images ," it said in the post .  Vulnerability was reported to Microsoft by McAfee Labs senior security researcher Haifei Li. A successful infection can give an attacker complete control over a system. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Currently the company is only aware of targeted attacks mostly in the Middle East and South Asia, with attackers sending unsuspecting v...

Address space layout randomization (ASLR) is a security technique involved in protection from buffer overflow attacks. Many recent APT (Advanced Persistent Threat) attacks have utilized many different ASLR bypass techniques during the past year, according to Researchers at  FireEye . Many exploits and malware attacks rely on the ability of the programmer to accurately identify where specific processes or system functions reside in memory. In order for an attacker to exploit or leverage a function, they must first be able to tell their code where to find the function or process to exploit.  The goal of ASLR  is to introduce randomness into addresses used by a given task. It involves randomly arranging the positions of key data areas of a program, including the base of the executable and the positions of the stack, heap, and libraries, in a process's address space.  Today a lot of attention is brought to client side exploits especially inside web brows...