disclosure – Page 2 – Insinuator.net

November 26, 2020 by Kevin Kelpen

VMware NSX-T MITM Vulnerability (CVE-2020-3993)

NSX-T is a Software-Defined-Networking (SDN) solution of VMware which, as its basic functionality, supports spanning logical networks across VMs on distributed ESXi and KVM hypervisors. The central controller of the SDN is the NSX-T Manager Cluster which is responsible for deploying the network configurations to the hypervisor hosts.

This summer, I looked into the mechanism which is used to add new KVM hypervisor nodes to the SDN via the NSX-T Manager. By tracing what happens on the KVM host, I discovered that the KVM hypervisor got instructed to download the NSX-T software packages from the NSX-T Manager via unencrypted HTTP and install them without any verification. This enables a Man-in-the-Middle (MITM) attacker on the network path to replace the downloaded packages with malicious ones and compromise the KVM hosts.

After disclosing this issue to VMware, they developed fixes and published the vulnerability in VMSA-2020-0023 assigning a CVSSv3 base score of 7.5.

Continue reading “VMware NSX-T MITM Vulnerability (CVE-2020-3993)”

Breaking

October 7, 2020 by Tillmann Oßwald

Vulnerabilities in GNU Readline Fixed

Recently I discovered some vulnerabilities in GNU Readline. These bugs have been fixed in GNU Readline version 8.1.

Continue reading “Vulnerabilities in GNU Readline Fixed”

Breaking

September 11, 2020 by Julian Suleder

ERNW White Paper 69 – Safety Impact of Vulnerabilities in Insulin Pumps

With this blog post I am pleased to announce the publication of a new ERNW White Paper [1]. The paper is about severe vulnerabilities in an insulin pump we assessed during project ManiMed and we are proud to publish this subset of the results today.

Continue reading “ERNW White Paper 69 – Safety Impact of Vulnerabilities in Insulin Pumps”

Breaking

April 23, 2020 by Julian Suleder

Medical Device Security: HL7v2 Injections in Patient Monitors

Digital networking is already widespread in many areas of life. In the healthcare industry, a clear trend towards networked devices is noticeable, so that the number of high-tech medical devices in hospitals is steadily increasing.

In this blog post, we want to elucidate a vulnerability we identified during the security assessment of a patient monitor. The device sends HL7 v2.x messages, such as observation results to HL7 v2.x capable electronic medical record (EMR) systems. A user with malicious intent can tamper these messages. As HL7 v2.x is a common medical communication standard, we also want to present how this kind of vulnerability may be mitigated. The assessment was part of the BSI project ManiMed, which we would like to present in the following section.

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Breaking

September 20, 2019 by Nils Emmerich

Jenkins – Groovy Sandbox breakout (SECURITY-1538 / CVE-2019-10393, CVE-2019-10394, CVE-2019-10399, CVE-2019-10400)

Recently, I discovered a sandbox breakout in the Groovy Sandbox used by the Jenkins script-security Plugin in their Pipeline Plugin for build scripts. We responsibly disclosed this vulnerability and in the current version of Jenkins it has been fixed and the according Jenkins Security Advisory 2019-09-12 has been published. In this blogpost I want to report a bit on the technical details of the vulnerability.

Continue reading “Jenkins – Groovy Sandbox breakout (SECURITY-1538 / CVE-2019-10393, CVE-2019-10394, CVE-2019-10399, CVE-2019-10400)”

Breaking

November 14, 2018 by Tillmann Oßwald

Multiple Vulnerabilities in Nexus Repository Manager

Recently, we identified security issues in the Nexus Repository Manager software developed by Sonatype. The tested versions were OSS 3.12.1-01 and OSS 3.13.1-01.

The following issues could be identified:

Multiple Cross-Site Scripting (CVE-2018-16619)
Missing Access Controls (CVE-2018-16620)
Java Expression Language Injection (CVE-2018-16621)

Continue reading “Multiple Vulnerabilities in Nexus Repository Manager”

Breaking

October 12, 2018 by Tillmann Oßwald

Multiple Vulnerabilities in UNIFY OpenScape Desk Phone CP600

We recently identified security issues in the UNIFY OpenScape Desk Phone CP600 HFA software. We disclosed the vulnerabilities to Unify, as a fix is now provided we want to give a brief overview of the vulnerability affecting the web interface.

Continue reading “Multiple Vulnerabilities in UNIFY OpenScape Desk Phone CP600”

Breaking

March 15, 2018 by Florian Grunow

Squirrelmail Full Disclosure – TROOPERS18

Birk an me basically fully disclosed a 0day in Squirrelmail yesterday. This is a short Q&A to answer the most common questions about the issue to calm you all down a little bit. 😉

Continue reading “Squirrelmail Full Disclosure – TROOPERS18”

Breaking

March 14, 2017 by Oliver Matula

Information About SAP Security Note 2336795

Last year I encountered a slight variation of an internal port scan vulnerability for the CrystalReports component of SAP Business Objects. The original vulnerability was presented and disclosed by rapid7 in the talk “Hacking SAP Business Objects”. The corresponding slides can be found here. Continue reading “Information About SAP Security Note 2336795”

Breaking

December 5, 2016 by Dominik Schneider

Analyzing yet another Smart Home device

As you have probably already recognized, some of us here at ERNW are doing research in the area of smart home technologies e.g. KNX. Recently, we took a deeper look into a device which is used to control a smart home system produced by the vendor BAB TECHNOLOGIE GmbH called “eibPort”. This device can be used to control smart home systems based on different technologies e.g. EnoCean or KNX depending on the version of the device. Continue reading “Analyzing yet another Smart Home device”