#ssl

Ubuntu Security Notice 6818-3 - Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel did not properly validate H2C PDU data, leading to a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service. It was discovered that the Intel Data Streaming and Intel Analytics Accelerator drivers in the Linux kernel allowed direct access to the devices for unprivileged users and virtual machines. A local attacker could use this to cause a denial of service.

langchain_experimental (aka LangChain Experimental) before 0.0.61 for LangChain provides Python REPL access without an opt-in step. NOTE; this issue exists because of an incomplete fix for CVE-2024-27444.

testssl.sh is a free command line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws, and much more. It is written in (pure) bash, makes only use of standard Unix utilities, openssl and last but not least bash sockets.

**Summary** Client-Initiated TLS Renegotiation Denial of Service (DoS) Vulnerability at Port 4200 **Details** A high-risk vulnerability has been identified where the TLS endpoint (port 4200) permits client-initiated renegotiation. In this scenario, an attacker can exploit this feature to repeatedly request renegotiation of security parameters during an ongoing TLS session. This flaw could lead to excessive consumption of CPU resources, resulting in potential server overload and service disruption. The vulnerability was confirmed using an openssl client where the command 'R' initiates renegotiation, followed by the server confirming with 'RENEGOTIATING'. **PoC** 1. Connect to the TLS server on port 4200 using an openssl client. 2. Initiate a TLS session. 3. Send the renegotiation command ('R') multiple times. 4. Observe the server response to confirm renegotiation. **Impact** This vulnerability allows an attacker to perform a denial of service attack by exhausting server CPU ...

### Impact The output of `cilium-bugtool` can contain sensitive data when the tool is run (with the `--envoy-dump` flag set) against Cilium deployments with the Envoy proxy enabled. Users of the following features are affected: - [TLS inspection](https://docs.cilium.io/en/stable/security/tls-visibility/#gs-tls-inspection) - [Ingress with TLS termination](https://docs.cilium.io/en/stable/network/servicemesh/tls-termination/#gs-ingress-tls) - [Gateway API with TLS termination](https://docs.cilium.io/en/stable/network/servicemesh/gateway-api/https/) - [Kafka network policies with API key filtering](https://docs.cilium.io/en/stable/security/policy/language/#kafka-beta) The sensitive data includes: - The CA certificate, certificate chain, and private key used by Cilium HTTP Network Policies, and when using Ingress/Gateway API - The API keys used in Kafka-related network policy `cilium-bugtool` is a debugging tool that is typically invoked manually and does not run during the normal op...

Why the company took so long to address the issue is not known given that most other stakeholders had a fix out for the issue months ago.

This Metasploit module chains an authentication bypass vulnerability with a deserialization vulnerability to obtain remote code execution against Telerik Report Server versions 10.0.24.130 and below. The authentication bypass flaw allows an unauthenticated user to create a new user with administrative privileges. The USERNAME datastore option can be used to authenticate with an existing account to prevent the creation of a new one. The deserialization flaw works by uploading a specially crafted report that when loaded will execute an OS command as NT AUTHORITY\SYSTEM. The module will automatically delete the created report but not the account because users are unable to delete themselves.

This exploit module leverages an arbitrary file write vulnerability in Cacti versions prior to 1.2.27 to achieve remote code execution. It abuses the Import Packages feature to upload a specially crafted package that embeds a PHP file. Cacti will extract this file to an accessible location. The module finally triggers the payload to execute arbitrary PHP code in the context of the user running the web server. Authentication is needed and the account must have access to the Import Packages feature. This is granted by setting the Import Templates permission in the Template Editor section.

Ubuntu Security Notice 6819-3 - Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel did not properly validate H2C PDU data, leading to a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service. Chenyuan Yang discovered that the RDS Protocol implementation in the Linux kernel contained an out-of-bounds read vulnerability. An attacker could use this to possibly cause a denial of service.

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).  View CSAF 1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SIMATIC, SIPLUS Vulnerabilities: Inadequate Encryption Strength, Improper Restriction of Operations within the Bounds of a Memory Buffer, Race Condition, Injection, Double Free, Integer Overflow or Wraparound, Improper Locking, NULL Pointer Dereference, Use-After-Free, Improper Input Validation, Improper Certificate Validation, Missing Release of Memory after Effective Lifetime, Out-of-bounds Read, Infinite Loop 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to leak memory, create a denial-of-service condition...