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Liv Matan

Senior Security Researcher, Tenable

Profile picture for user Liv Matan

Liv is a Senior Security Researcher at Tenable, specializing in cloud, application and web security. As a bug bounty hunter, Liv has found vulnerabilities in popular software platforms, including Azure, Google Cloud, AWS, Facebook and GitLab. Liv was recognized by Microsoft as a Most Valuable Security Researcher and ranked among the top eight Google Vulnerability Researchers for 2024. He has also presented at conferences including Black Hat USA, DEF CON Cloud Village, SecTor, Bsides LV, fwd:cloudsec and INTENT. You can follow Liv on X @terminatorLM.

 

Blog Post

ConfusedComposer: A Privilege Escalation Vulnerability Impacting GCP Composer

Tenable Research discovered a privilege-escalation vulnerability in Google Cloud Platform (GCP) that is now fixed and which we dubbed ConfusedComposer. The vulnerability could have allowed an identity with permission (composer.environments.update) to edit a Cloud Composer environment to escalate privileges to the default Cloud Build service account. The default Cloud Build service account includes permissions to Cloud Build itself, as well as to Cloud Storage, Artifact Registry, and more.

Blog Post

ImageRunner: A Privilege Escalation Vulnerability Impacting GCP Cloud Run

Tenable Research discovered a privilege escalation vulnerability in Google Cloud Platform (GCP) that is now fixed and which we dubbed ImageRunner. At issue are identities that lack registry permissions but that have edit permissions on Google Cloud Run revisions. The vulnerability could have allowed such an identity to abuse its Google Cloud Run revision edit permissions in order to pull private Google Artifact Registry and Google Container Registry images in the same account.

Blog Post

CloudImposer: Executing Code on Millions of Google Servers with a Single Malicious Package

Tenable Research discovered a remote code execution (RCE) vulnerability in Google Cloud Platform (GCP) that is now fixed and that we dubbed CloudImposer. The vulnerability could have allowed an attacker to hijack an internal software dependency that Google pre-installs on each Google Cloud Composer pipeline-orchestration tool. Tenable Research also found risky guidance in GCP documentation that customers should be aware of.

Blog Post

ConfusedFunction: A Privilege Escalation Vulnerability Impacting GCP Cloud Functions

Organizations that have used Google Cloud Platform’s Cloud Functions – a serverless execution environment – could be impacted by a privilege escalation vulnerability discovered by Tenable and dubbed as “ConfusedFunction.” Read on to learn all about the vulnerability and what your organization needs to do to protect itself.

Research Advisory

Google Cloud Platform (GCP) Privilege Escalation Vulnerability In Cloud Functions

Blog Post

These Services Shall Not Pass: Abusing Service Tags to Bypass Azure Firewall Rules (Customer Action Required)

Azure customers whose firewall rules rely on Azure Service Tags, pay attention: You could be at risk due to a vulnerability detected by Tenable Research. Here’s what you need to know to determine if you’re affected, and if so, what you should do right away to protect your Azure environment from attackers.

Blog Post

FlowFixation: AWS Apache Airflow Service Takeover Vulnerability and Why Neglecting Guardrails Puts Major CSPs at Risk

Tenable Research discovered a one-click account takeover vulnerability in the AWS Managed Workflows Apache Airflow service that could have allowed full takeover of a victim’s web management panel of the Airflow instance. The discovery of this now-resolved vulnerability reveals a broader problem of misconfigured shared-parent domains that puts customers of major CSPs at risk.

Blog Post

ApatchMe - Authenticated Stored XSS Vulnerability in AWS and GCP Apache Airflow Services

Unpatched Apache Airflow instances used in Amazon Web Services (AWS) and Google Cloud Platform (GCP) allow an exploitable stored XSS through the task instance details page.

Blog Post

The MGM Breach and the Role of IdP in Modern Cyber Attacks

A deep dive into the recent MGM breach and our insights into the actor behind the attack and possible mitigations.

Blog Post

The Azure Metadata Protection You Didn’t Know Was There

Some Azure services have an additional, not widely known, protection mechanism against session token exfiltration.

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