Overview This notice is to advise Joyent customers of CVE-2018-8897, a potential security vulnerability surrounding writes to the %ss register. Description In some circumstances, some operating systems may not expect or properly handle an Intel architecture debug exception, after certain instructions involving writes to the %ss register: The issue appears to originate from an undocumented side effect of the instructions. An attacker might utilize this exception handling to gain access to Ring 0 and access sensitive memory, or to control operating system processes.

Overview This notice is to advise Joyent customers of the potential security vulnerabilities surrounding Intel hardware, known as Spectre and Meltdown: CVE-2017-5753 CVE-2017-5715 CVE-2017-5754 Description Details surrounding Intel’s findings regarding Spectre and Meltdown can be reviewed here. Additional information can be reviewed here and here. Actions Taken by Joyent Joyent has created a new Platform Image (PI) containing KPTI (Kernel Page Table Isolation) and PCID (Process Context Identifier). We are in the process of applying this PI across the Triton Cloud (public cloud).

Overview This notice is to advise Triton Cloud (public cloud) users, Triton On-Premises Software operators, and Open Source Triton users of a vulnerability reported by Zero Day Initiative (ZDI). Description The following security vulnerability has been identified by Ben Murphy with Zero Day Initiative: ZDI-CAN-5106. Through ZDI, we have previously been made aware of this vulnerability. Here is a brief description of the issue and its resolution: Issue: A malicious DTrace helper can lead to zone escape via out-of-bounds relocation.

Overview This notice is to advise Joyent customers of TA14-017A, a potential security vulnerability surrounding misconfigured applications/services that utilize User Datagram Protocol (UDP). Description A misconfigured application/service that utilizes UDP can cause a Triton instance to be vulnerable to Distributed Denial of Service (DDoS) attacks, causing the Triton instance to attack others. Further details surrounding this vulnerability (including a list of applications/services that may be vulnerable) can be found in this alert from US-CERT.

Overview This notice is to advise Joyent’s Triton Cloud (public cloud) customers, Triton on-premises software customers and Open Source Triton users of two security vulnerabilities. Description The following security vulnerabilities have been identified by Ben with Zero Day Initiative (ZDI): ZDI-CAN-4983 and ZDI-CAN-4984. Through ZDI, we have previously been made aware of these vulnerabilities. Here is a brief description of the issue and its resolution: Issue: A local process can generate a panic by issuing commands to the smb subsystem.

Overview This notice is to advise Triton Cloud (public cloud) users, Triton On-Premises Software operators, Node.js users and Open Source Triton users of a vulnerability reported by Node. Description Node has made Joyent aware of the following high-severity DOS vulnerability: CVE-2017-14919 The following Node.js versions are vulnerable to this issue, which can be used by an external attacker to cause a denial of service: Versions 4.8.2 and later Versions 6.10.2 and later All versions of 8.

Overview This notice is to advise Triton Cloud (public cloud) users, Triton On-Premises Software operators, Triton On-Premises Object Storage (Manta) operators and Open Source Triton users of two vulnerabilities reported by Node. Description Joyent has been made aware of the following Node vulnerabilities: “Constant Hashtable Seeds” (CVE-2017-11499) - high severity “- c-ares NAPTR parser out of bounds access” (CVE-2017-1000381) - low severity Of the two, only the high-severity “Constant Hashable Seeds” vulnerability has been determined to have any potential effect on Joyent’s infrastructure/services.

Overview This notice is to advise Joyent’s Triton Cloud (public cloud) customers, Triton on-premises software customers and Open Source Triton users of a high-severity arbitrary Docker file overwrite vulnerability that could be introduced using Docker file copy and Docker build. Description The following security vulnerability has been identified by Ben with Zero Day Initiative (ZDI): ZDI-CAN-3853 Through ZDI, we have previously been made aware of this issue. Here is a brief description of the issue and the resolution:

Overview This notice is to advise the user groups identified below of CVE-2016-5195, the high-severity “Dirty Cow” vulnerability first announced here (and on other sites) in November 2016. Description This race condition is in mm/gup.c in the Linux kernel 2.x through 4.x (before 4.8.3), and it allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping. The only affected Joyent images are KVM images, so those have been updated accordingly.

Overview This notice is to advise the user groups identified below of a recently-discovered, /proc filesystem permission vulnerability. The issue was reported directly to Joyent Engineering by a security researcher. Description This high-severity vulnerability exists in the core SmartOS platform. The exploit allows non-root users to create objects in the /proc directory within the zone. The validations for filesystem permissions have been hardened to prevent such unauthorized actions. The following user groups are affected Joyent customers using on-premises Triton software All users of SmartOS, including Triton public cloud customers (the fix has already been applied across the entire public cloud) Users of Open Source Triton Actions Taken by Joyent Joyent has created a new Platform Image (PI) containing fixes that address these vulnerabilities.