Denial Of Service (DoS)

asterisk is vulnerable to denial of service DoS attacks. A null pointer dereference in chansip while handling SDP negotiation allows an attacker to crash the system when handling an SDP answer to an outgoing T.38 re-invite...

CVE-2021-38296 Apache Spark Key Negotiation Vulnerability

Apache Spark supports end-to-end encryption of RPC connections via "spark.authenticate" and "spark.network.crypto.enabled". In versions 3.1.2 and earlier, it uses a bespoke mutual authentication protocol that allows for full encryption key recovery. After an initial interactive attack, this would...

AlmaLinux 8 : openssh (ALSA-2021:4368)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2021:4368 advisory. - The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-midd...

The Best Ransomware Response, According to the Data

Ransomware has become part of the cost of doing business, and driving down that cost can be the difference between recovery and catastrophe. A data analysis from Fox-IT, part of NCC Group, offers some best practices for how to minimize the fallout of a ransomware attack, after creating a dataset ...

openssh: Observable discrepancy leading to an information leak in the algorithm negotiation

A flaw was found in OpenSSH in versions 5.7 through 8.3, where an Observable Discrepancy occurs and leads to an information leak in the algorithm negotiation. This flaw allows a man-in-the-middle attacker to target initial connection attempts, where there is no host key for the server that has be...

Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Observable discrepancy leading to an information leak in the algorithm negotiation...

Ransomware Negotiation Scenarios: What to Expect

We wanted to get a better understanding of what victims go through during the aftermath and recovery process of a ransomware attack to help others in case they find themselves in a similar situation. To do this, we analyzed victim support chats for five ransomware families...

Ransomware Negotiation Scenarios: What to Expect

We wanted to get a better understanding of what victims go through during the aftermath and recovery process of a ransomware attack to help others in case they find themselves in a similar situation. To do this, we analyzed victim support chats for five ransomware families...

This Week in Security News - October 29, 2021

What to Expect in a Ransomware Negotiation & Cybercriminals Claim to Have Hacked the NRA...

NewStart CGSL CORE 5.05 / MAIN 5.05 : nss Multiple Vulnerabilities (NS-SA-2021-0156)

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has nss packages installed that are affected by multiple vulnerabilities: - When importing a curve25519 private key in PKCS8format with leading 0x00 bytes, it is possible to trigger an out-of-bounds read in the Network Security...

What To Expect in a Ransomware Negotiation

We wanted to get a better understanding of what victims go through during the aftermath and recovery process of a ransomware attack to help others in case they find themselves in a similar situation. To do this, we analyzed victim support chats for five ransomware families...

What To Expect in a Ransomware Negotiation

We wanted to get a better understanding of what victims go through during the aftermath and recovery process of a ransomware attack to help others in case they find themselves in a similar situation. To do this, we analyzed victim support chats for five ransomware families...

Juniper Networks SRX Series 加密问题漏洞

The Juniper Networks SRX Series is a set of SRX Series service gateway appliances from Juniper Networks, Inc. The Juniper Networks SRC Series suffers from a cryptographic issue vulnerability that stems from NETCONF over SSH allowing weak password negotiation. An attacker could exploit this...

CVE-2021-31352

An Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers, which could allow a remote attacker to obtain sensitive information. A remote attacker with read and write access to network data could exploit thi...

Security issues in AWS KMS and AWS Encryption SDKs: in-band protocol negotiation and robustness

Authors: Thai "thaidn" Duong Summary The following security vulnerabilities was discovered and reported to Amazon, affecting AWS KMS and all versions of AWS Encryption SDKs prior to version 2.0.0: Information leakage: an attacker can create ciphertexts that would leak the user’s AWS account ID,...

GHSA-WQGP-VPHW-HPHF Security issues in AWS KMS and AWS Encryption SDKs: in-band protocol negotiation and robustness

Authors: Thai "thaidn" Duong Summary The following security vulnerabilities was discovered and reported to Amazon, affecting AWS KMS and all versions of AWS Encryption SDKs prior to version 2.0.0: Information leakage: an attacker can create ciphertexts that would leak the user’s AWS account ID,...

CLSA-2021-1632261705 Fix of CVE: CVE-2021-25215, CVE-2021-25214, CVE-2021-25216

A broken inbound incremental zone update IXFR can cause named to terminate unexpectedly CVE-2021-25214 - An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself CVE-2021-25215 - A second vulnerability in BIND's GSSAPI security...

CLSA-2021-1632261610 Fix of CVE: CVE-2020-8625

Fix buffer overflow in the SPNEGO implementation affecting GSSAPI security policy negotiation CVE-2020-8625...

ROS-2-448

2.448 Vulnerability in OpenVPN CVE-2020-11810 1. Vulnerability Description: A corrective release of the OpenVPN Virtual Private Networking Package 2.4.9 has been generated. The new version addresses a vulnerability CVE-2020-11810 that allows a client session to be transferred to a new IP address...

CVE-2021-40523

In Contiki 3.0, Telnet option negotiation is mishandled. During negotiation between a server and a client, the server may fail to give the WILL/WONT or DO/DONT response for DO and WILL commands because of improper handling of exception condition, which leads to property violations and denial of...