May 2024 (30)
Argo Workflows ConfigMap Sync Service Missing Authorization Vulnerability
2 rules 1 TTPThe Sync Service's ConfigMap-backed provider in Argo Workflows performs zero authorization checks on all CRUD operations, allowing any authenticated user to create, read, update, and delete Kubernetes ConfigMaps containing synchronization limits, potentially leading to denial of service, workflow disruption, information disclosure, or arbitrary ConfigMap manipulation in Argo Workflows versions v4.0.0 to v4.0.4.
Enumerating Domain Trusts via DSQUERY.EXE
2 rules 2 TTPsAdversaries may use dsquery.exe to enumerate domain trusts, which can be leveraged for lateral movement in Windows multi-domain environments.
Potential ADIDNS Poisoning via Wildcard Record Creation
2 rules 1 TTPAttackers can create wildcard records in Active Directory Integrated DNS (ADIDNS) to redirect traffic, enabling adversary-in-the-middle attacks for credential interception or relay.
AWS EC2 Instance Connect SSH Public Key Upload
2 rules 3 TTPsThis rule detects the uploading of new SSH public keys to AWS EC2 instances using the EC2 Instance Connect service, which could indicate an adversary attempting to maintain access, escalate privileges, or move laterally within the cloud environment.
Entra ID OAuth Phishing via Auth Broker to DRS
2 rules 1 TTP 2 IOCsDetection of OAuth phishing in Microsoft Entra ID through Microsoft Authentication Broker (MAB) and Device Registration Service (DRS) indicated by the same user principal and session ID originating from multiple IP addresses within a short timeframe, indicative of unauthorized token acquisition.
Microsoft Defender Tampering via Registry Modification
3 rules 2 TTPsAdversaries may disable or tamper with Microsoft Defender features to evade detection and conceal malicious behavior by modifying specific registry keys and values.
AWS EC2 AMI Shared with Another Account for Potential Exfiltration
2 rules 1 TTPAn AWS Amazon Machine Image (AMI) being shared with another AWS account could indicate data exfiltration, as AMIs may contain sensitive data, and unauthorized sharing can lead to exposure.
ScreenConnect Server Spawning Suspicious Processes
2 rules 4 TTPsThe ScreenConnect server is spawning suspicious processes such as cmd.exe and powershell.exe, potentially indicating exploitation or web shell activity leading to unauthorized access and control over the system.
Veeam Backup Library Loaded by Unusual Process
2 rules 3 TTPsDetects potential credential decryption operations by PowerShell or unsigned processes using the Veeam.Backup.Common.dll library, indicating potential credential access attempts to target backups as part of destructive operations.
GitHub Push Protection Disabled
2 rules 1 TTPAn administrator has disabled the GitHub push protection feature, potentially allowing secrets and other sensitive information to be pushed to repositories.
GStreamer Multiple Vulnerabilities Allow for Remote Code Execution and Denial of Service
2 rules 2 TTPs 5 CVEsMultiple vulnerabilities in GStreamer allow a remote, anonymous attacker to cause a denial-of-service condition or execute arbitrary code.
GStreamer Multiple Vulnerabilities Allow Remote Code Execution and Denial of Service
2 rules 2 TTPs 5 CVEsMultiple vulnerabilities in GStreamer could be exploited by a remote, anonymous attacker to execute arbitrary code or cause a denial of service condition.
Insecure AWS EC2 VPC Security Group Ingress Rule Added
2 rules 2 TTPsAn AWS EC2 VPC security group ingress rule was added to allow traffic from any IP address (0.0.0.0/0 or ::/0) to common remote access ports, potentially exposing instances to unauthorized access and defense evasion.
JetBrains TeamCity Authentication Bypass Vulnerability (CVE-2024-27198)
2 rules 1 TTPExploitation of CVE-2024-27198 in JetBrains TeamCity allows unauthenticated attackers to bypass authentication and gain administrative access by sending malicious HTTP POST requests to specific API endpoints.
Logback Denial of Service Vulnerability
2 rules 3 TTPsA remote, anonymous attacker can exploit a vulnerability in Logback to perform a denial-of-service (DoS) attack.
Red Hat Enterprise Linux Quarkus Vulnerabilities Lead to Information Disclosure and Denial of Service
2 rules 2 TTPsMultiple vulnerabilities in Quarkus on Red Hat Enterprise Linux allow a remote attacker to disclose information or trigger a denial of service.
Algorithmic Complexity DoS in @chenglou/pretext
2 rules 1 TTPA denial-of-service vulnerability exists in the `isRepeatedSingleCharRun()` function of the `@chenglou/pretext` npm package (versions 0.0.4 and earlier), which exhibits O(n²) algorithmic complexity when processing input consisting of repeated identical punctuation characters, leading to main thread blocking and DoS.
Potential AWS S3 Bucket Ransomware Note Upload
3 rules 3 TTPsAn adversary may upload a ransomware note to an AWS S3 bucket by abusing compromised credentials or overly permissive bucket policies, potentially leading to data encryption or exfiltration.
OpenCanary SSH Login Attempt Detection
2 rules 1 TTPDetects instances where an SSH service on an OpenCanary node has had a login attempt, indicating potential reconnaissance, privilege escalation, or lateral movement.
GenAI Process Connection to Unusual Domain on macOS
2 rules 1 TTPThis rule detects GenAI tools on macOS connecting to unusual domains, potentially indicating command and control activity, data exfiltration, or malicious payload retrieval following compromise via prompt injection, malicious MCP servers, or poisoned plugins.
AWS EC2 Unauthorized Admin Credential Fetch via Assumed Role
2 rules 2 TTPsThe rule detects the first occurrence of an unauthorized attempt by an AWS role to use `GetPasswordData` to access the administrator password of an EC2 instance, potentially indicating privilege escalation or lateral movement.
Ollama Model Exfiltration Attempt Detection
2 rules 1 TTPThis brief describes detection of potential data exfiltration attempts targeting Ollama model metadata and configuration endpoints by adversaries repeatedly querying specific API endpoints to extract sensitive model information.
OpenMage LTS Remote Code Execution via File Upload Bypass
2 rules 1 TTPOpenMage LTS is vulnerable to remote code execution due to an incomplete file upload blocklist, allowing attackers to upload PHP-executable files and execute arbitrary code on the server.
AWS Systems Manager SecureString Parameter Request with Decryption Flag
2 rules 1 TTPThis rule detects when an AWS resource accesses SecureString parameters within AWS Systems Manager (SSM) with the decryption flag set to true, potentially indicating credential access.
Dgraph Unauthenticated Admin Token Disclosure via /debug/vars
3 rules 2 TTPsDgraph versions prior to 25.3.3 expose the admin token via the `/debug/vars` endpoint, allowing unauthenticated attackers to bypass authentication and gain administrative access.
Kubernetes Event Deletion for Defense Evasion
2 rules 1 TTPAn adversary may delete Kubernetes events to evade detection and hide malicious activity within a Kubernetes environment by removing audit logs.
Monetr Lunch Flow SSRF Vulnerability
2 rules 1 TTP 1 IOCA server-side request forgery (SSRF) vulnerability in Monetr's Lunch Flow integration allows authenticated users on self-hosted instances to send HTTP GET requests to arbitrary URLs, potentially exposing sensitive information.
Scriban TemplateContext MemberFilter Bypass Vulnerability
2 rules 1 TTPScriban versions before 7.0.0 are vulnerable to a sandbox escape due to improper caching of type accessors in `TemplateContext`, leading to a `MemberFilter` bypass when a `TemplateContext` is reused, potentially exposing sensitive data.
TVicPort64.sys Arbitrary Physical Memory Mapping LPE
2 rules 1 TTPThe TVicPort64.sys driver, signed by EnTech Taiwan in 2006, is vulnerable to arbitrary physical memory mapping, enabling local privilege escalation on Windows systems.
Zserio Runtime Unbounded Memory Allocation Vulnerability
2 rules 1 TTPA crafted payload can force memory allocations of up to 16 GB, leading to a denial-of-service condition in applications using the Zserio serialization framework, including those within the automotive Navigation Data Standard (NDS).