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As part of this month's Patch Tuesday , Microsoft has released security patches for a serious privilege escalation vulnerability which affect all versions of its Windows operating system for enterprises released since 2007. Researchers at behavioral firewall specialist Preempt discovered two zero-day vulnerabilities in Windows NTLM security protocols, both of which allow attackers to create a new domain administrator account and get control of the entire domain. NT LAN Manager (NTLM) is an old authentication protocol used on networks that include systems running the Windows operating system and stand-alone systems. Although NTLM was replaced by Kerberos in Windows 2000 that adds greater security to systems on a network, NTLM is still supported by Microsoft and continues to be used widely. The first vulnerability involves unprotected Lightweight Directory Access Protocol (LDAP) from NTLM relay, and the second impact Remote Desktop Protocol (RDP) Restricted-Admin mode. L

Update: Find working Exploits and Proof-of-Concepts at the bottom of this article. Security researchers have discovered more than a decade-old vulnerability in several Unix-based operating systems — including Linux, OpenBSD, NetBSD, FreeBSD and Solaris — which can be exploited by attackers to escalate their privileges to root, potentially leading to a full system takeover. Dubbed Stack Clash , the vulnerability ( CVE-2017-1000364 ) has been discovered in the way memory was being allocated on the stack for user space binaries. Exploiting Stack Clash Bug to Gain Root Access The explanation is simple: Each program uses a special memory region called the stack, which is used to store short-term data. It expands and contracts automatically during the execution of any program, depending upon the needs of that program. According to researchers at Qualys, who discovered and reported this bug, a malicious program can attempt to use more memory space than available on the stack,

To minimize the risk of privilege misuse, a trend in the privileged access management (PAM) solution market involves implementing just-in-time (JIT) privileged access. This approach to  privileged identity management  aims to mitigate the risks associated with prolonged high-level access by granting privileges temporarily and only when necessary, rather than providing users with continuous high-level privileges. By adopting this strategy, organizations can enhance security, minimize the window of opportunity for potential attackers and ensure that users access privileged resources only when necessary.  What is JIT and why is it important?   JIT privileged access provisioning  involves granting privileged access to users on a temporary basis, aligning with the concept of least privilege. This principle provides users with only the minimum level of access required to perform their tasks, and only for the amount of time required to do so. One of the key advantages of JIT provisioning

Another privilege-escalation vulnerability has been discovered in Linux kernel that dates back to 2005 and affects major distro of the Linux operating system, including Redhat, Debian, OpenSUSE, and Ubuntu. Over a decade old Linux Kernel bug ( CVE-2017-6074 ) has been discovered by security researcher Andrey Konovalov in the DCCP (Datagram Congestion Control Protocol) implementation using Syzkaller , a kernel fuzzing tool released by Google. The vulnerability is a use-after-free flaw in the way the Linux kernel's "DCCP protocol implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket." The DCCP double-free vulnerability could allow a local unprivileged user to alter the Linux kernel memory, enabling them to cause a denial of service ( system crash ) or escalate privileges to gain administrative access on a system. "An attacker can control what object that would be and overwrite

In Brief Microsoft has issued its first Patch Tuesday for 2017 , and it's one of the smallest ever monthly patch releases for the company, with only four security updates to address vulnerabilities in its Windows operating system as well as Adobe Flash Player. Meanwhile, Adobe has also released patches for more than three dozen security vulnerabilities in its Flash Player and Acrobat/Reader for Windows, MacOS, and Linux desktops. According to the Microsoft Advisory, only one security bulletin is rated critical, while other three are important. The bulletins address security vulnerabilities in Microsoft's Windows, Windows Server, Office, Edge and Flash Player. The only security bulletin rated as critical is the one dedicated to Adobe Flash Player, for which Microsoft distributed security patches through Windows Update. Other security bulletins that addresses flaws in Microsoft products are as follows: Bulletin 1 — MS17-001 This security update resolves just one v

Over a month ago we reported about two critical zero-day vulnerabilities in the world's 2nd most popular database management software MySQL: MySQL Remote Root Code Execution (CVE-2016-6662) Privilege Escalation (CVE-2016-6663) At that time, Polish security researcher Dawid Golunski of Legal Hackers who discovered these vulnerabilities published technical details and proof-of-concept exploit code for the first bug only and promised to release details of the second bug (CVE-2016-6663) later. On Tuesday, Golunski has released proof-of-concept (POC) exploits for two vulnerabilities: One is the previously promised critical privilege escalation vulnerability ( CVE-2016-6663 ), and another is a new root privilege escalation bug ( CVE-2016-6664 ) that could allow an attacker to take full control over the database. Both the vulnerabilities affect MySQL version 5.5.51 and earlier, MySQL version 5.6.32 and earlier, and MySQL version 5.7.14 and earlier, as well as MySQL forks

Google has once again publicly disclosed a zero-day vulnerability in current versions of Windows operating system before Microsoft has a patch ready. Yes, the critical zero-day is unpatched and is being used by attackers in the wild. Google made the public disclosure of the vulnerability just 10 days after privately reporting the issue to Microsoft, giving the chocolate factory little time to patch issues and deploy a fix. According to a blog post by Google's Threat Analysis Group, the reason behind going public is that it has seen exploits for the vulnerability in the wild and according to its internal policy , companies should patch or publicly report such bugs after seven days. Windows Zero-Day is Actively being Exploited in the Wild The zero-day is a local privilege escalation vulnerability that exists in the Windows operating system kernel. If exploited, the flaw can be used to escape the sandbox protection and execute malicious code on the compromised system.

A nine-year-old critical vulnerability has been discovered in virtually all versions of the Linux operating system and is actively being exploited in the wild. Dubbed " Dirty COW ," the Linux kernel security flaw (CVE-2016-5195) is a mere privilege-escalation vulnerability, but researchers are taking it extremely seriously due to many reasons. First, it's very easy to develop exploits that work reliably. Secondly, the Dirty COW flaw exists in a section of the Linux kernel, which is a part of virtually every distro of the open-source operating system, including RedHat, Debian, and Ubuntu, released for almost a decade. And most importantly, the researchers have discovered attack code that indicates the Dirty COW vulnerability is being actively exploited in the wild. Dirty COW potentially allows any installed malicious app to gain administrative (root-level) access to a device and completely hijack it within just 5 seconds. Earlier this week, Linus Torvalds admi

Android has Fallen! Yet another set of Android security vulnerabilities has been discovered in Qualcomm chipsets that affect more than 900 Million Android smartphones and tablets worldwide. What's even worse: Most of those affected Android devices will probably never be patched. Dubbed " Quadrooter ," the set of four vulnerabilities discovered in devices running Android Marshmallow and earlier that ship with Qualcomm chip could allow an attacker to gain root-level access to any Qualcomm device. The chip, according to the latest statistics, is found in more than 900 Million Android tablets and smartphones. That's a very big number. The vulnerabilities have been disclosed by a team of Check Point researchers at the DEF CON 24 security conference in Las Vegas. Critical Quadrooter Vulnerabilities: The four security vulnerabilities are: CVE-2016-2503 discovered in Qualcomm's GPU driver and fixed in Google's Android Security Bulletin for July

How much a Windows zero-day exploit that affects all versions of Windows operating system costs on the black market? It's $95,000, at least, for the one recently spotted by security researchers. Researchers from Trustwave's SpiderLabs team have uncovered a zero-day exploit on Russian underground malware forum exploit.in, affecting all versions of Microsoft Windows OS from Windows 2000 all the way up to a fully patched version of Windows 10. The zero-day exploit for the previously unknown vulnerability in " every version " of Windows is openly sold for $90,000 ( over £62,000 ). The security team originally discovered the zero-day exploit last month when the firm saw its ad on a Russian hacking forum for $95,000. However, the price has now been dropped to $90,000. The zero-day vulnerability in question claims to be a Local Privilege Escalation (LPE) bug in Windows that offers admin access to run malicious code on a victim's PC and is less dangerous th

With the release of 12 Security Bulletins , Microsoft addresses a total of 56 vulnerabilities in its different products. The bulletins include five critical updates, out of which two address vulnerabilities in all versions of Windows. The September Patch Tuesday update (released on second Tuesday of each month) makes a total of 105 Security Bulletins being released this year; which is more than the previous year with still three months remaining for the current year to end. The reason for the increase in the total number of security bulletins within such less time might be because of Windows 10 release and its installation reaching to a score of 100 million. Starting from MS15-094 to   MS15-105 ( 12 security bulletins ) Microsoft rates the severity of the vulnerabilities and their impact on the affected software. Bulletins MS15-094 and MS15-095 are the cumulative updates, meaning these are product-specific fixes for security related vulnerabilities that are rated

A security researcher has discovered a critical vulnerability in the latest version of Apple's OS X Yosemite  that could allow anyone to obtain unrestricted root user privileges with the help of code that fits in a tweet. The privilege-escalation vulnerability initially reported on Tuesday by German researcher Stefan Esser , could be exploited by to circumvent security protections and gain full control of Mac computers. The most worrying part is that this critical vulnerability is yet to be fixed by Apple in the latest release of its operating system. This could make it easier for hackers to surreptitiously infect Macs with rootkits and other types of persistent malware. Thanks to an environment variable DYLD_PRINT_TO_FILE Apple added to the code of OS X 10.10 Yosemite. Apple Mac OS X Vulnerability Gives Full Control of your Mac This environment variable specifies where in the file system an operating system component called the OS X dynamic linker dyld

Among several vulnerabilities, Microsoft on Tuesday patched a critical vulnerability that could be exploited by hackers to bypass security measures on all versions of Windows operating systems from XP to Windows 10, just by modifying a single bit. The local privilege escalation vulnerability ( CVE-2015-0057 ) could give attackers total control of the victims' machines, explains Udi Yavo, the chief technology officer at the security firm enSilo. " A threat actor that gains access to a Windows machine can exploit this vulnerability to bypass all Windows security measures, defeating mitigation measures such as sandboxing, kernel segregation and memory randomization ," said Yavo. INTERESTING PART OF THE FLAW Yavo continued, " Interestingly, the exploit requires modifying only a single bit of the Windows operating system. " The flaw existed in the graphical user interface (GUI) component of the Win32k.sys module within the Windows Kernel which, amon

Google has once again released the details of a new privilege escalation bug in Microsoft's Windows 8.1 operating system before Microsoft planned to patch the bug, triggering a new quarrel between the two tech giants. This is second time in less than a month when the Google's security research team known as Project Zero released details of the vulnerability in Microsoft's operating system, following its 90-day public disclosure deadline policy. Google Project Zero team routinely finds vulnerabilities in different products from different companies. The vulnerabilities then get reported to the affected software vendors and if they do not patch the flaws in 90 days, Google automatically makes the vulnerability along with its details public. DISCLOSURE OF TWO SECURITY HOLES IN LESS THAN A MONTH Two weeks back, Google Project Zero team disclosed details of an elevation of privilege (EoP) vulnerability  affecting Windows 8.1 that may have allowed hackers to modify cont

A Google security researcher, ' James Forshaw ' has discovered a privilege escalation vulnerability in Windows 8.1 that could allow a hacker to modify contents or even to take over victims' computers completely, leaving millions of users vulnerable. The researcher also provided a Proof of Concept (PoC) program for the vulnerability. Forshaw says that he has tested the PoC only on an updated Windows 8.1 and that it is unclear whether earlier versions, specifically Windows 7, are vulnerable. Forshaw unearthed the bug in September 2014 and thereby notified on the Google Security Research mailing list about the bug on 30th September. Now, after 90 days disclosure deadline the vulnerability and Proof of Concept program was made public on Wednesday. The vulnerability resides in the function AhcVerifyAdminContext , an internal function and not a public API which actually checks whether the user is an administrator. "This function has a vulnerability where i

A security weakness in Android mobile operating system versions below 5.0 that puts potentially every Android device at risk for privilege escalation attacks, has been patched in  Android 5.0 Lollipop  – the latest version of the mobile operating system. The security vulnerability ( CVE-2014-7911 ), discovered by a security researcher named Jann Horn , could allow any potential attacker to bypass the Address Space Layout Randomization (ASLR) defense and execute arbitrary code of their choice on a target device under certain circumstances. ASLR is a technique involved in protection from buffer overflow attacks. The flaw resides in java.io.ObjectInputStream , which fails to check whether an Object that is being deserialized is actually a serializable object. The vulnerability was reported by the researcher to Google security team earlier this year. According to the security researcher, android apps can communicate with system_service, which runs under admin privileges

A Swedish Security researcher has discovered a critical vulnerability in Apple's OS X Yosemite that gives hackers the ability to escalate administrative privileges on a compromised machine, and allows them to gain the highest level of access on a machine, known as root access. The vulnerability, dubbed as " Rootpipe ", was uncovered by Swedish white-hat hacker Emil Kvarnhammar , who is holding on the full details about the privilege escalation bug until January 2015, as Apple needs some time to prepare a security patch. " Details on the #rootpipe exploit will be presented, but not now. Let's just give Apple some time to roll out a patch to affected users, " Emil Kvarnhammar, IT specialist and hacker security company Truesec, tweeted from his twitter account. By exploiting the vulnerability in the Mac OS X Yosemite , an attacker could bypass the usual safeguard mechanisms which are supposed to stop anyone who tries to root the operating system through a tempora

Multiple flaws have been identified in Linux Kernel and related software could allow hackers to hack your Linux machines, shared hosting and websites hosted on them. PRIVILEGE ESCALATION VULNERABILITY IN LINUX KERNEL A privilege escalation vulnerability has been identified in the widely used Linux kernel that could allow an attackers to take the control of users' system. On Thursday, the most popular distributor of open source Linux OS, Debian warned about this vulnerability (CVE-2014-3153) in a security update, along with some other vulnerabilities in the Linux kernel that may lead to a denial of service attack. The most critical one is the flaw (CVE-2014-3153) discovered by Pinkie Pie which resides in the futex subsystem call of Linux Kernel 2.6.32.62/3.2.59/3.4.91/3.10.41/3.12.21/3.14.5 versions , leaving a queued kernel waiter on the stack, which can be exploited to potentially execute arbitrary code with kernel mode privileges. " Pinkie Pie discovered an