Which insecure kernel should i use

JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Feb 21, 6 0 You should upgrade to a newer version as soon as possible to avoid your system being compromised.

Please Help Us Thank You. Show hidden low quality content. You must log in or register to reply here. Resolving services that are running outdated executables WHM shows service down but it's running You are running an insecure kernel.

Top Bottom. On top of that, arbitrary firmware could be loaded remotely onto the hardware was possible, representing a real potential problem. The EVBox platform had a different problem, where an authenticated user could simply specify a security role. The tenantadmin role was of particular interest here, working as a superadmin that could see and manage multiple accounts. This flaw was patched within an impressive 24 hours.

The EVBox charger , as well as several other devices they checked had fundamental security weaknesses due to their use of Raspberry Pi hardware in the product. Several of the flaws they found in the chargers mentioned above were discovered because the device filesystems were wide open for inspection.

A processor that can handle device encryption, ideally better than the TPM and Windows Bitlocker combination we covered last week, gives some real security against such an attack.

Now Linux on the Pi can certainly do an encrypted filesystem, but the real problem is the storage of the encryption key. What was even weirder, it only happened when running the command in a particular folder, where a libc.

Her security-sense tingled. For some reason, that library file was probably getting loaded when the docker command was run. A quick strace confirmed the theory, but why was that happening? Ubuntu has started providing certain programs as snaps rather than traditional packages. If one of the variables used to build that variable is blank, you end up with a double colon as part of the string.

Linux interprets that as the current directory, and hence running a package installed via Snapcraft will potentially load dynamic libs unintentionally. A suggested attack is to distribute a video file in an archive, and including a malicious library. Any user that just extracts the files and plays the video in a Snapcraft installed player will automatically load the malicious library.

The problem was tracked as CVE and fixed late A trio of stories about request forgeries surfaced this week, the first being a cross site request forgery CSRF on OkCupid. To start, a CSRF attack is when visiting one website can trigger an action on a different website. An area of improvement would be creating viable ways to keep access to things like compat, user namespaces, BPF creation, and perf limited only to trusted processes.

This would keep the scope of kernel entry points restricted to the more regular set of normally available to unprivileged userspace.

The kernel should never allow an unprivileged user the ability to load specific kernel modules, since that would provide a facility to unexpectedly extend the available attack surface.

The on-demand loading of modules via their predefined subsystems, e. For example, loading a filesystem module via an unprivileged socket API is nonsense: only the root or physically local user should trigger filesystem module loading. And even this can be up for debate in some scenarios. To protect against even privileged users, systems may need to either disable module loading entirely e. There are many memory structures in the kernel that are regularly abused to gain execution control during an attack, By far the most commonly understood is that of the stack buffer overflow in which the return address stored on the stack is overwritten.

Many other examples of this kind of attack exist, and protections exist to defend against them. Other defenses include things like shadow stacks. A less well understood attack is using a bug that triggers the kernel to consume stack memory with deep function calls or large stack allocations. Many places in the kernel use atomic counters to track object references or perform similar lifetime management. When these counters can be made to wrap over or under this traditionally exposes a use-after-free flaw.

By trapping atomic wrapping, this class of bug vanishes. Similar to counter overflow, integer overflows usually size calculations need to be detected at runtime to kill this class of bug, which traditionally leads to being able to write past the end of kernel buffers.

While many protections can be considered deterministic e. Impacted versions: Before 2. Hold on tight for this one. View the fix details and the rest of their analysis here.

This can allow hackers to cause a denial of service or even execute arbitrary code via a single crafted MPLS packet. Check out this short and sweet fix to stay secure. See his findings and the fix here. This is the oldest CVE Linux kernel vulnerability to make our list, packing a punch that we still remember from until today.

Basically this is a failure to perform the validity check which can cause a memory overflow. Find what you need to know to implement the fix here. It would not feel right to finish this list off without a final netfilter vulnerability. Find the fix here. The researchers note that this issue is related to a Linux kernel vulnerability from back in , CVE We should remember that just because one vulnerability gets resolved, the Linux kernel plays such a key role in the open source space that some issues are likely to reappear in different forms from time to time.

Hopefully, you have had a chance to take a look through your inventory and dependencies to see if you are using any of these components in the Linux kernel.