Category Archives: Advisories

[RT-SA-2021-003] Missing Authentication in ZKTeco ZEM/ZMM Web Interface

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Posted by RedTeam Pentesting GmbH on Oct 24

Advisory: Missing Authentication in ZKTeco ZEM/ZMM Web Interface

The ZKTeco time attendance device does not require authentication to use the
web interface, exposing the database of employees and their credentials.

Details
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Product: ZKTeco ZEM500-510-560-760, ZEM600-800, ZEM720, ZMM
Affected Versions: potentially versions below 8.88 (ZEM500-510-560-760, ZEM600-800, ZEM720) and 15.00 (ZMM200-220-210)
Fixed Versions: firmware version 8.88…

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CVE-2021-44467 (iac-ast2500a_firmware)

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A broken access control vulnerability in the KillDupUsr_func function of spx_restservice allows an attacker to arbitrarily terminate active sessions of other users, causing a Denial-of-Service (DoS) condition. This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

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CVE-2021-26727

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Multiple command injections and stack-based buffer overflows vulnerabilities in the SubNet_handler_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

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CVE-2021-26728

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Command injection and stack-based buffer overflow vulnerabilities in the KillDupUsr_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

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CVE-2021-26729 (iac-ast2500a_firmware)

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Command injection and multiple stack-based buffer overflows vulnerabilities in the Login_handler_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

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