CVE-2023-52727
📋 TL;DR
CVE-2023-52727 is an out-of-bounds read vulnerability in the parseAlignBits function of ONOS onos-lib-go library. This allows attackers to read sensitive memory contents, potentially leading to information disclosure or denial of service. Organizations using SD-RAN ONOS deployments with the vulnerable library are affected.
💻 Affected Systems
- Open Networking Foundation SD-RAN ONOS
- onos-lib-go library
📦 What is this software?
Onos Lib Go by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Memory corruption leading to remote code execution, complete system compromise, or sensitive data exfiltration from SD-RAN controllers.
Likely Case
Denial of service through application crashes or information disclosure of adjacent memory contents.
If Mitigated
Limited impact with proper network segmentation and memory protection mechanisms in place.
🎯 Exploit Status
Exploitation requires triggering the specific parseAlignBits function with malformed input. No public exploits have been documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: onos-lib-go 0.10.26 or later
Vendor Advisory: https://github.com/onosproject/onos-lib-go/issues/245
Restart Required: Yes
Instructions:
1. Update onos-lib-go dependency to version 0.10.26 or later. 2. Rebuild any applications using this library. 3. Restart ONOS services and dependent applications.
🔧 Temporary Workarounds
Input Validation Wrapper
allImplement input validation before calling parseAlignBits function to prevent out-of-range conditions.
Implement custom wrapper function that validates input length before calling parseAlignBits
🧯 If You Can't Patch
- Implement strict network segmentation to isolate SD-RAN controllers from untrusted networks.
- Deploy runtime application self-protection (RASP) or memory protection solutions to detect/prevent out-of-bounds memory access.
🔍 How to Verify
Check if Vulnerable:
Check go.mod or dependency files for onos-lib-go version <=0.10.25. Run: grep -r "onos-lib-go" go.mod | grep -E "0\.10\.(25|[0-9]|1[0-9]|2[0-4])"Check Version:
grep onos-lib-go go.modVerify Fix Applied:
Verify onos-lib-go version is 0.10.26 or higher: grep -r "onos-lib-go" go.mod | grep -E "0\.10\.(2[6-9]|[3-9][0-9])"📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory access violation errors in ONOS logs
- Unusual parseAlignBits function calls with malformed input
Network Indicators:
- Unexpected traffic to ONOS API endpoints handling alignment operations
- Repeated connection attempts to SD-RAN controller services
SIEM Query:
source="onos-logs" AND ("segmentation fault" OR "out of bounds" OR "parseAlignBits")