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CVE-2026-45579 Google Chronicle · YARA-L

Detect DIRAC RequestManager eval() Remote Code Execution (CVE-2026-45579) in Google Chronicle

Detects exploitation attempts and successful compromise of DIRAC's RequestManager component via CVE-2026-45579, a CWE-95 (Eval Injection) vulnerability where untrusted RPC input passed to RequestManager is evaluated via Python's eval() function, resulting in unauthenticated or low-privilege remote code execution. Affected DIRAC (pip package) versions are >=6,<8.0.79, >=8.1.0a1,<9.0.22, and >=9.1.0,<9.1.10. A public PoC exists (GHSA-9jpv-c7p4-997x). Detection focuses on anomalous eval-triggering payloads sent to DIRAC RequestManager RPC/DISET endpoints, resulting child process spawns from DIRAC service processes, and post-exploitation artifacts consistent with grid/HPC computing infrastructure compromise.

MITRE ATT&CK

Tactic
Initial Access Execution Lateral Movement

YARA-L Detection Query

Google Chronicle (YARA-L)
yaral
rule dirac_requestmanager_eval_rce_cve_2026_45579 {
  meta:
    author = "df00tech"
    description = "Detects process spawns from DIRAC RequestManager consistent with CVE-2026-45579 eval injection RCE"
    severity = "CRITICAL"
    cve = "CVE-2026-45579"
  events:
    $proc.metadata.event_type = "PROCESS_LAUNCH"
    $proc.principal.process.parent_process.command_line = /(?i)(RequestManager|dirac-service|dirac-request)/
    $proc.principal.process.command_line = /(?i)(eval\(|__import__|os\.system|subprocess|socket\.socket|\/bin\/sh|base64)/
  condition:
    $proc
}
critical severity medium confidence

Chronicle YARA-L rule detecting process launch events where a process with a DIRAC RequestManager/service parent command line spawns a child process containing eval-injection indicators, mapping to CVE-2026-45579 exploitation.

Data Sources

Chronicle UDM PROCESS_LAUNCH eventsEDR ingestion

Required Tables

principal.process

False Positives & Tuning

  • Legitimate administrative use of eval() for DIRAC diagnostics
  • Test/CI automation invoking RequestManager with benign payloads
  • Unrelated processes sharing substring matches in command lines

Other platforms for CVE-2026-45579


Testing Methodology

Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.

  1. Test 1Simulate DIRAC RequestManager eval() RCE via crafted RPC payload

    Expected signal: Process creation event showing python3 (DIRAC RequestManager service) spawning /bin/sh -c "id > /tmp/dirac_poc_out" or equivalent child process with eval-injection command-line markers

  2. Test 2Simulate reverse shell spawned from DIRAC service process

    Expected signal: Bash process with /dev/tcp redirection spawned by a process whose parent command line references RequestManager/dirac-service, plus an outbound TCP connection on port 4444

  3. Test 3Simulate malicious eval() injection payload execution on Windows lab host

    Expected signal: DeviceProcessEvents entry showing python.exe spawning cmd.exe/whoami with a parent command line simulation referencing RequestManager, writing output to a temp file

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