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Technology Update
Technology Update
Securing CI/CD

Pipelines

Addressing the Unique Challenges in DevOps

Edited by MOHAN DAS VISWAM

s organizations increasingly adopt DevOps Top Security Risks in CI/CD Pipelines
practices, Continuous Integration and
AContinuous Delivery (CI/CD) pipelines have Insufficient Flow Control Mechanisms
become essential for streamlining the software Risk: Inadequate management of the flow be-
development lifecycle. However, this fast-paced CI/CD pipelines enable tween stages in the pipeline can allow attackers
development environment is not without its risks. fast software delivery but to manipulate the order or conditions under
A secure CI/CD pipeline is critical to ensuring that which code is tested and deployed. Without prop-
the rapid deployment of code doesn’t expose come with security risks like er sequencing, unauthorized actions may bypass
your systems to vulnerabilities or malicious weak flow control, IAM gaps, critical security checks.
attacks. In this paper, we will explore the unique Mitigation:
security risks inherent to CI/CD pipelines and and dependency exploits. • Implement detailed policies that define the
offer strategies for mitigating them. Mitigation includes role-based exact order of operations in the pipeline.

Understanding the CI/CD Pipeline access control, multi-factor • Use CI/CD tools that support flow control fea-
The CI/CD pipeline is a development methodol- authentication, secure secrets tures, ensuring that code must pass through pre-
ogy designed to automate the process of integrat- management, and automated defined security gates before proceeding.
ing, testing, and deploying code. While it offers Inadequate Identity and Access
immense benefits, such as faster release cycles testing. Tools like Jenkins and Management
and higher-quality code, it also creates new at- GitLab CI/CD help enhance Risk: Poorly managed identity and access con-
tack vectors that adversaries can exploit. The trols can expose sensitive environments. Attack-
pipeline typically includes the following stages: security. Best practices include ers could gain unauthorized access to the code-
• Code Repository: Code is stored in a version isolating environments, using base, modify deployment scripts, or introduce
control system (e.g., Git). Each push or pull re- immutable infrastructure, malicious code.
quest can trigger automated actions in the pipe- Mitigation:
line. and conducting regular • Use role-based access control (RBAC) to limit
• Build Stage: The code is compiled into arti- audits. A real-world example access to specific pipeline actions.
facts. This process may involve resolving depen- of dependency confusion • Enforce multi-factor authentication (MFA) for
dencies, packaging the application, and prepar- accessing critical components of the pipeline.
ing for deployment. highlights the importance of •
• Test Stage: Automated tests (e.g., unit, integra- securing the CI/CD process to sure compliance with the principle of least priv-
Regularly audit user access permissions to en-
tion) are run to verify that the application func- protect against evolving threats. ilege.
tions correctly. Failures at this stage can halt fur-
ther progression in the pipeline. Dependency Chain Abuse
• Deploy Stage: If the tests pass, the application Risk: Modern software development relies
is deployed to a staging or production environ- heavily on third-party libraries and packages. If
ment for final validation and monitoring. these dependencies are compromised, attack-
• Production Stage: Once the application has ers can inject malicious code into your project
through seemingly legitimate updates.
successfully passed all previous stages, it is de- Mitigation:
ployed to the live production environment. The • Regularly scan dependencies for known vul-
production stage is particularly sensitive, as any nerabilities using tools like Snyk or npm audit.
issues at this point directly affect end users. • Pin dependencies to specific versions to pre-
Continuous monitoring in production is crucial vent automatic updates from introducing mali-
to ensure the application remains secure and cious code.
performs as expected. Malicious actors may at- • Download packages only from trusted sources,
tempt to exploit vulnerabilities in this stage to and implement package integrity checks to en-
inject backdoors, steal data, or compromise the
Jeevitha J. sure that they haven’t been tampered with.
Scientist - D system’s integrity.
j.jeevitha@nic.in Each of these stages presents unique securi- Poisoned Pipeline Execution (PPE)
ty challenges, requiring organizations to enforce Risk: In a PPE attack, adversaries compromise
strict security controls throughout the process. the CI/CD pipeline itself, injecting malicious

40 informatics.nic.in October 2024