CVE-2024-45751
📋 TL;DR
CVE-2024-45751 is a cryptographic weakness in tgt (Linux target framework) where predictable random number generation allows attackers to guess authentication challenges. This affects systems using tgt for iSCSI target services before version 1.0.93. Attackers could potentially bypass authentication mechanisms.
💻 Affected Systems
- tgt (Linux target framework)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Authentication bypass leading to unauthorized access to iSCSI storage targets, potentially allowing data theft, modification, or denial of service.
Likely Case
Attackers with network access could guess predictable challenge values to authenticate to iSCSI targets they shouldn't have access to.
If Mitigated
With proper network segmentation and authentication controls, impact is limited to internal network attacks only.
🎯 Exploit Status
Exploitation requires understanding of iSCSI protocol and ability to send crafted packets to tgt service.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.93
Vendor Advisory: https://github.com/fujita/tgt/pull/67
Restart Required: Yes
Instructions:
1. Check current tgt version. 2. Update to version 1.0.93 or later via package manager or source compilation. 3. Restart tgt service. 4. Verify update was successful.
🔧 Temporary Workarounds
Network segmentation
linuxRestrict access to tgt service ports (default 3260) to trusted networks only
iptables -A INPUT -p tcp --dport 3260 -s TRUSTED_NETWORK -j ACCEPT
iptables -A INPUT -p tcp --dport 3260 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach tgt service
- Monitor authentication attempts and failed connections to tgt service
🔍 How to Verify
Check if Vulnerable:
Check tgt version with 'tgtd --version' or package manager query. Versions before 1.0.93 are vulnerable.Check Version:
tgtd --version 2>/dev/null || dpkg -l | grep tgt || rpm -qa | grep tgtVerify Fix Applied:
After update, confirm version is 1.0.93 or later and restart service. Test iSCSI connections function normally.📡 Detection & Monitoring
Log Indicators:
- Unusual iSCSI connection patterns
- Multiple failed authentication attempts from single source
- Successful connections from unexpected IP addresses
Network Indicators:
- Unexpected traffic to port 3260
- Patterned or predictable challenge values in iSCSI packets
SIEM Query:
source="tgt.log" AND ("authentication failed" OR "connection from") | stats count by src_ip