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Advisories

CSL 1010 M2M 3G WiFi Module 2.2.1.4 Weak Encryption via Router.cfg

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severity
medium
date
Affecting

  • CSL 1010 M2M 3G WiFi Module <= 2.2.1.4

CWE
  • CWE-261 Weak Encoding for Password
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Gjoko Krstic of Zero Science Lab
Description
CSL 1010 M2M 3G WiFi Module firmware through 2.2.1.4 contains a weak encryption vulnerability that allows unauthenticated attackers to recover all stored secrets in plaintext by reversing a single-byte XOR cipher with a static key applied to the configuration backup file. Attackers can trivially decrypt the Router.cfg backup file to expose web administration and telnet passwords, WPA/WPA2 pre-shared keys, PPPoE and 3G/APN credentials, and SIM identifiers including IMSI and IMEI.

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