Preface: Vulnerabilities are flaws in computer software that create weaknesses in your computer or network overall security.
Can you imagine that what is the actual situation before vulnerability found?

Background information: Jenkins is the leading open-source automation server. Built with Java, it provides over 1000 plugins to support automation.

Vulnerability announcement on 17th Dec 2018:
The vulnerability is due to improper handling of HTTP requests by the stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java code of the Stapler web framework used by the affected software. An attacker could exploit this vulnerability by persuading a user to access a link that submits malicious input to the targeted system. An exploit could allow the attacker to invoke certain methods that are not intended to be invoked, which the attacker could use to execute arbitrary code.

Official announcement (Remedy): https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595

Preface: Xen Project is a hypervisor using a microkernel design, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently.

Vulnerability description:
The vulnerability is due to an interpretation conflict for union data structure associated with shadow paging.The XSA-240 introduced a new field into the control structure
associated with each page of RAM. This field was added to a union data structure.Thus dirty bitmap tracking which is used when performing live migration of virtual machines. However a technical conflicts during migration, or L1TF mitigation for PV guests(L1 Terminal Fault speculative side channel mitigation – XSA-273).

Impact: All Xen versions from at least 3.2 onwards are vulnerable. Earlier versions have not been checked

Official remedy solution: https://xenbits.xen.org/xsa/advisory-280.html

Preface: As time goes by, an evolution in technology offers best-of-class in rendering for both VFX and feature film animation.

What does VFX stand for?
Visual effects (abbreviated VFX) is the process by which imagery is created or manipulated outside the context of a live action shot in film making.
RenderMan offers a combination of unbiased and biased rendering techniques which provide both accuracy and technical efficiency

Vulnerability details:
Pixar’s Tractor software, versions 2.2 and earlier, contain a stored cross-site scripting vulnerability.

Stored XSS, also known as persistent XSS, is the more damaging of the two. It occurs when a malicious script is injected directly into a vulnerable web application.
In most of the cases, cross-site scripting attack is being used to steal the other person‘s cookies. As we know, cookies help us to log in automatically. Therefore with stolen cookies, we can login with the other identities. Cope with above vulnerability, the stored information is displayed when a user requests information about the node. An attacker could insert Javascript into this note field that is then saved and displayed to the end user.

Reference: https://kb.cert.org/vuls/id/756913/

Preface: Since we launched it in 2014, Kubernetes running strong. It is becoming “the Linux of the cloud,” according to Jim Zemlin, Executive Director of the Linux Foundation. Analysts estimate that 54 percent of Fortune 100 companies use Kubernetes across a spectrum of industries including finance, manufacturing, media, and others.

Giant will sick as normal people (so called vulnerability):
Critical – CVE-2018-1002105 kubernetes: authentication/authorization bypass in the handling of non-101 responses. Reference: https://access.redhat.com/security/cve/cve-2018-1002105

CVE-2018-1002101 – In Kubernetes versions 1.9.0-1.9.9, 1.10.0-1.10.5, and 1.11.0-1.11.1, user input was handled insecurely while setting up volume mounts on Windows nodes, which could lead to command line argument injection. Reference:
Reference:  https://github.com/kubernetes/kubernetes/issues/65750

CVE-2018-1002103 – The attacker can use DNS rebinding to indirectly make requests to the Kubernetes Dashboard, create a new Kubernetes Deployment running arbitrary code. If minikube mount is in use, the attacker could also directly access the host filesystem.
Reference: https://github.com/kubernetes/minikube/issues/3208

Preface:
Remote code execute and Privileges escalation are the critical vulnerabilities topics which lure end user attentions. On patch Tuesday (remedy program) issued by Microsoft this week. Their product design limitation contains priviliges escalation vulnerability.

CVE-2018-8611 – Vulnerability details:
With reference of CVE-2018-8611 inform customer that exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application to take control of an affected system.

Technical background:
So far, the the win32k.sys kernel module is a well-known attack surface. The function NtUserSetWindowLongPtr replaces the target window’s spmenu field with the function’s argument without any checks when using GWLP_ID and the target window’s style is WS_CHILD.
NtUserSetWindowLongPtr is a win32k service function which can be called from user mode (use the corresponding system call ID).
In the nutshell, this gives a way to attacker to replace the target window’s spmenu value to anything.

Microsoft remedy: 

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8611