cbcvebase.
CVE-2017-3506
published 2017-04-24

CVE-2017-3506: Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: Web Services). Supported versions that are affected are…

PriorityP192high7.4CVSS 3.1
AVNACHPRNUINSUCHIHAN
KEVITWEXPLOITInitial access
CISA Known Exploited Vulnerabilitydue 2024-06-24
Exploited in the wild
EPSS
96.28%
99.9th percentile
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: Web Services). Supported versions that are affected are 10.3.6.0, 12.1.3.0, 12.2.1.0, 12.2.1.1 and 12.2.1.2. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle WebLogic Server accessible data as well as unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.0 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

Affected

10 ranges
VendorProductVersion rangeFixed in
oracleweblogic_server
oracleweblogic_server
oracleweblogic_server
oracleweblogic_server
oracleweblogic_server
oracle_corporationweblogic_server
oracle_corporationweblogic_server
oracle_corporationweblogic_server
oracle_corporationweblogic_server
oracle_corporationweblogic_server

Detection & IOCsextracted from sources · hover to see the quote

hashf4d11b36a844a68bf9718cf720984468583efa6664fc99966115a44b9a20aa33
hash0bf87b0e65713bf35c8cf54c9fa0015fa629624fd590cb4ba941cd7cdeda8050
hashb380b771c7f5c2c26750e281101873772e10c8c1a0d2a2ff0aff1912b569ab93
hash2e32c5cea00f8e4c808eae806b14585e8672385df7449d2f6575927537ce8884
ip89.185.85.102
domaingod.sck-dns.cc
port9091
filenamewireguard2-3.exe
filenameIsSynchronized.exe
pathC:\Users\$USERNAME$\AppData\Roaming\Name\IsSynchronized.exe
pathC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
mutex6cbe41284f6a992cc0534b
registryHKEY_CURRENT_USER\SOFTWARE\
commandPowershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -enc 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
filenamebin.ps1
url/_async/*
url/wls-wsat/*
bytes
AES Key: 5D8D6871C3D59D855616603F686713AC48BF2351F6182EA282E1D84CBB15B94F | AES IV: CAAD009AC0881FE2A89F80CEEA6D1B6
  • Water Sigbin (8220 Gang) exploits CVE-2017-3506 to drop a PowerShell script that decodes and executes a Base64-encoded first-stage payload; monitor for PowerShell execution spawned from WebLogic server processes.
  • The first-stage loader masquerades as the legitimate WireGuard VPN application (wireguard2-3.exe); alert on WireGuard-named executables dropped in temp directories and spawned from non-standard parent processes.
  • The malware uses reflective DLL injection (Zxpus.dll loaded in-memory) and process injection into cvtres.exe for fileless execution; monitor for cvtres.exe spawned outside of build/compile contexts, especially from .NET framework paths.
  • PureCrypter adds malware paths to Windows Defender exclusion list via a hidden scheduled task running an encoded PowerShell command; detect Add-MpPreference -ExclusionPath/-ExclusionProcess calls referencing AppData\Roaming\Name\ or AddInProcess.exe.
  • The malware generates a victim unique ID from hardware info in the format [Processor ID]-[Disk Drive Signature]-[Disk Drive Serial Number]-[Baseboard Serial Number]-[GPU Model]-[Username] and encrypts it with MD5; network traffic to C2 containing this pattern can be used for detection.
  • CVE-2017-3506 exploitation targets the /_async/* and /wls-wsat/* URL paths via malicious SOAP/XML requests; monitor HTTP traffic to these endpoints on WebLogic servers for XMLDecoder payloads.
  • The group exploited Oracle WebLogic vulnerabilities using PowerShell scripts with hexadecimal encoding of URLs and fileless execution via .NET reflection techniques; hunt for hex-encoded URLs in PowerShell command lines targeting WebLogic hosts.
  • Check Point IPS rule available for detection: 'Oracle WebLogic WLS Security Component Remote Code Execution (CVE-2017-10271)' covers related WebLogic WLS exploitation activity.
  • ·All payloads in the Water Sigbin campaign are protected with .NET Reactor, incorporating anti-debugging and code obfuscation, making static analysis and signature-based detection more difficult.
  • ·The PureCrypter loader version observed is V6.0.7D; version-specific detection rules should account for potential updates to this loader.
  • ·CVE-2017-3506 exploitation via the WorkContextXmlInputAdapter/XMLDecoder deserialization path was partially mitigated by a validate() blacklist function; subsequent CVEs (CVE-2019-2725, CVE-2019-2729) represent bypasses of this blacklist, so blacklist-only defenses are insufficient.

CVSS provenance

nvdv3.17.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
nvdv2.05.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
vulncheck7.4HIGH
cisa7.4HIGH
CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.