9/23/2023 0 Comments Debian![]() ![]() ![]() On January 22nd, Max Justicz published a write up detailing a vulnerability in the apt client. In this post we will cover some of the technical details of the vulnerability, explain how it can be exploited by an attacker in data centers, and discuss effective ways to mitigate against such attacks. If exploited, the vulnerability may allow an attacker to run code at root permissions on victim servers and basically perform any action they want, such as installing trojans, ransomware, worms and more. Using simple network traffic spoofing and traffic injection techniques, an attacker can easily impersonate an apt server and exploit this vulnerability to bypass security measures and further spread in the network towards the organization’s crown jewels. All of these are likely to be vulnerable. Distrowatch lists over 100 active distributions (large and small) based on Debian. The apt package management software is part of every Debian based Linux distribution, covering Debian, Ubuntu and a whole group of smaller distributions such as Kali, TailsOS and many others. The vulnerability can be exploited when administrators install or upgrade software package on vulnerable servers. The vulnerability (CVE-2019-3462) is in Debian’s high-level package management system, which is used by system administrators to install, upgrade and remove software packages. A new vulnerability in Debian’s Advanced Package Tool ( apt) is the latest big tool in the data center attacker’s arsenal. ![]()
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