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Potential CVE-2023-23397 Exploitation Attempt - Windows Server filter #5691

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Merged
swachchhanda000 merged 2 commits into from
Oct 18, 2025
Merged

Potential CVE-2023-23397 Exploitation Attempt - Windows Server filter #5691

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7fe16f5
Adding RemoteAddress field for Windows Server coverage
djlukic Oct 13, 2025
7afe5bf
Merge branch 'master' into smb_winserver_remoteaddress_
swachchhanda000 Oct 18, 2025
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14 changes: 13 additions & 1 deletion .../CVE-2023-23397/win_smbclient_connectivity_exploit_cve_2023_23397_outlook_remote_file.yml
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Expand Up @@ -7,7 +7,7 @@ references:
- https://github.com/nasbench/Misc-Research/blob/fc46f6da34ff7e0076da28fd3e66d6e1100f1c2f/ETW/Microsoft-Windows-SMBClient.md
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-04-05
modified: 2025-04-07
modified: 2025-10-13
tags:
- attack.exfiltration
- cve.2023-23397
Expand Down Expand Up @@ -73,6 +73,18 @@ detection:
- '0200????0A' # 10.
- '0200????7F' # 127
- '0200????A9FE' # 169.254.
- RemoteAddress|contains:
# IPv6
- '00000000000000000000000000000001' # ::1 - IPv6 loopback
- 'FE80000000000000' # fe80:: - IPv6 link-local addresses
- 'FC00000000000000' # fc00:: - IPv6 private addresses
# IPv4
# The "?" are meant to represent the port
- '0200????C0A8' # 192.168.
- '0200????AC' # 172.
- '0200????0A' # 10.
- '0200????7F' # 127
- '0200????A9FE' # 169.254.
condition: selection and not 1 of filter_main_*
falsepositives:
- Some false positives may occur from external trusted servers. Apply additional filters accordingly
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