cbcvebase.
CVE-2023-46217
published 2023-12-19

CVE-2023-46217: An attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could result to a Denial of Service (DoS) or…

PriorityP275critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
36.39%
98.4th percentile
An attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could result to a Denial of Service (DoS) or code execution.

Affected

2 ranges
VendorProductVersion rangeFixed in
ivantiavalanche< 6.4.26.4.2
ivantiwavelink6.4.1 – 6.4.1—

Detection & IOCsextracted from sources · hover to see the quote

port1777↗
processWLAvalancheService.exe↗
pathC:\Program Files\Wavelink\Avalanche\MobileDeviceServer\WLAvalancheService.exe↗
  • →CVE-2023-46217 is triggered by sending a MuProperty type 102 message to WLAvalancheService.exe on TCP port 1777; monitor for oversized MuProperty type 102 values in the message stream targeting this port. ↗
  • →The exploit overwrites the stack return address with 0x41414141 (repeated); look for crash dumps or WER reports from WLAvalancheService.exe showing return addresses of 0x41414141. ↗
  • →The message structure sent to TCP/1777 begins with a big-endian 16-byte preamble (MsgSize, HdrSize, PayloadSize, unk); anomalously large PayloadSize or ValueSize fields in MuProperty type 102 indicate an attack attempt. ↗
  • →Unauthenticated exploitation — no prior session or credentials required; any connection to TCP/1777 sending a crafted MuProperty type 102 packet should be treated as suspicious. ↗
  • ·WLAvalancheService.exe listens on TCP port 1777; this port must be network-accessible for the vulnerability to be remotely exploitable — firewall rules restricting access to this port mitigate exposure. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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