#ruby

Your fortnightly rundown of AppSec vulnerabilities, new hacking techniques, and other cybersecurity news

A regular expression based DoS vulnerability in Action Dispatch <6.1.7.1 and <7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking, when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.

A denial of service vulnerability present in ActiveRecord's PostgreSQL adapter <7.0.4.1 and <6.1.7.1. When a value outside the range for a 64bit signed integer is provided to the PostgreSQL connection adapter, it will treat the target column type as numeric. Comparing integer values against numeric values can result in a slow sequential scan resulting in potential Denial of Service.

Some Hikvision Hybrid SAN products were vulnerable to multiple remote code execution (command injection) vulnerabilities, including reflected cross site scripting, Ruby code injection, classic and blind SQL injection resulting in remote code execution that allows an adversary to execute arbitrary operating system commands and more. However, an adversary must be on the same network to leverage this vulnerability to execute arbitrary commands.

Security vulnerability was one of Meta’s top bugs of 2022

flash_tool Gem for Ruby contains a flaw that is triggered during the handling of downloaded files that contain shell characters. With a specially crafted file, a context-dependent attacker can execute arbitrary commands.

Devise version before 3.5.4 uses cookies to implement a "Remember me" functionality. However, it generates the same cookie for all devices. If an attacker manages to steal a remember me cookie and the user does not change the password frequently, the cookie can be used to gain access to the application indefinitely.

xaviershay-dm-rails Gem for Ruby contains a flaw in the `execute()` function in `/datamapper/dm-rails/blob/master/lib/dm-rails/storage.rb`. The issue is due to the function exposing sensitive information via the process table. This may allow a local attack to gain access to MySQL credential information.

An issue was discovered in the rollback feature of Elastic Endpoint Security for Windows, which could allow unprivileged users to elevate their privileges to those of the LocalSystem account.

An issue has been discovered in GitLab affecting all versions starting from 12.8 before 15.4.6, all versions starting from 15.5 before 15.5.5, all versions starting from 15.6 before 15.6.1. It was possible to trigger a DoS attack by uploading a malicious nuget package.