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8 vulnerabilities found for gs1900-48hp by zyxel

VAR-201911-1311

Vulnerability from variot - Updated: 2023-12-18 14:00

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. User accounts created through the web interface of the device, when given non-admin level privileges, have the same level of privileged access as administrators when connecting to the device via SSH (while their permissions via the web interface are in fact restricted). This allows normal users to obtain the administrative password by running the tech-support command via the CLI: this contains the encrypted passwords for all users on the device. As these passwords are encrypted using well-known and static parameters, they can be decrypted and the original passwords (including the administrator password) can be obtained. Zyxel GS1900 There is a privilege management vulnerability in the device firmware.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. The ZyXEL GS1900 is a managed switch from ZyXEL, Taiwan.

A security hole exists in the Zyxel GS1900 using firmware 2.50 (AAHH.0) prior to C0. An attacker could exploit the vulnerability to obtain an administrative password

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VAR-202112-2078

Vulnerability from variot - Updated: 2023-12-18 13:37

A vulnerability in the 'libsal.so' of the Zyxel GS1900 series firmware version 2.60 could allow an authenticated local user to execute arbitrary OS commands via a crafted function call. (DoS) It may be in a state. Zyxel ZyXEL GS1900 is a managed switch from Zyxel in Taiwan

Show details on source website

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VAR-202112-2079

Vulnerability from variot - Updated: 2023-12-18 13:37

A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands via the GUI of the vulnerable device. (DoS) It may be in a state. Zyxel ZyXEL GS1900 is a managed switch from Zyxel, Taiwan.

An access control error vulnerability exists in several Zyxel products. The vulnerability is caused by the product's TFTP client not adding permission control to the function of executing system commands. An attacker can use this vulnerability to execute arbitrary operating system commands after logging in

Show details on source website

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VAR-201911-1314

Vulnerability from variot - Updated: 2023-12-18 13:33

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware hashes and encrypts passwords using a hardcoded cryptographic key in sal_util_str_encrypt() in libsal.so.0.0. The parameters (salt, IV, and key data) are used to encrypt and decrypt all passwords using AES256 in CBC mode. With the parameters known, all previously encrypted passwords can be decrypted. This includes the passwords that are part of configuration backups or otherwise embedded as part of the firmware. Zyxel GS1900 Device firmware contains a vulnerability related to the use of hard-coded credentials.Information may be obtained. The ZyXEL GS1900 is a managed switch from ZyXEL, Taiwan.

A security hole exists in the Zyxel GS1900 with this version of firmware prior to 2.50 (AAHH.0)C0

Show details on source website

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VAR-201911-1316

Vulnerability from variot - Updated: 2023-12-18 13:07

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. By sending a signal to the CLI process, undocumented functionality is triggered. Specifically, a menu can be triggered by sending the SIGQUIT signal to the CLI application (e.g., through CTRL+\ via SSH). The access control check for this menu does work and prohibits accessing the menu, which contains "Password recovery for specific user" options. The menu is believed to be accessible using a serial console. Zyxel GS1900 An input validation vulnerability exists in the device firmware.Information may be altered. ZyXEL GS1900 is a managed switch of ZyXEL Corporation in Taiwan.

There is a security vulnerability in Zyxel GS1900 using firmware versions prior to 2.50 (AAHH.0) C0

Show details on source website

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VAR-201911-1313

Vulnerability from variot - Updated: 2023-12-18 12:49

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware image contains encrypted passwords that are used to authenticate users wishing to access a diagnostics or password-recovery menu. Using the hardcoded cryptographic key found elsewhere in the firmware, these passwords can be decrypted. This is related to fds_sys_passDebugPasswd_ret() and fds_sys_passRecoveryPasswd_ret() in libfds.so.0.0. Zyxel GS1900 The device firmware contains an information disclosure vulnerability from the cache.Information may be obtained. The ZyXEL GS1900 is a managed switch from ZyXEL, Taiwan.

A security hole exists in the Zyxel GS1900 using firmware 2.50 (AAHH.0) prior to C0

Show details on source website

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VAR-201911-1312

Vulnerability from variot - Updated: 2023-12-18 12:43

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Due to lack of input validation in the cmd_sys_traceroute_exec(), cmd_sys_arp_clear(), and cmd_sys_ping_exec() functions in the libclicmd.so library contained in the firmware, an attacker could leverage these functions to call system() and execute arbitrary commands on the switches. (Note that these functions are currently not called in this version of the firmware, however an attacker could use other vulnerabilities to finally use these vulnerabilities to gain code execution.). Zyxel GS1900 There is an input validation vulnerability in the device firmware.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. The ZyXEL GS1900 is a managed switch from ZyXEL, Taiwan.

A security vulnerability exists in Zyxel GS1900 using firmware version 2.50 (AAHH.0) prior to C0, which is due to missing input in the 'cmd_sys_traceroute_exec()', 'cmd_sys_arp_clear()', and 'cmd_sys_ping_exec()' functions in the libclicmd.so library Verification check. An attacker could exploit this vulnerability to execute arbitrary code on the switch

Show details on source website

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VAR-201911-1315

Vulnerability from variot - Updated: 2023-12-18 11:59

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Through an undocumented sequence of keypresses, undocumented functionality is triggered. A diagnostics shell is triggered via CTRL-ALT-t, which prompts for the password returned by fds_sys_passDebugPasswd_ret(). The firmware contains access control checks that determine if remote users are allowed to access this functionality. The function that performs this check (fds_sys_remoteDebugEnable_ret in libfds.so) always return TRUE with no actual checks performed. The diagnostics menu allows for reading/writing arbitrary registers and various other configuration parameters which are believed to be related to the network interface chips. Zyxel GS1900 There is an input validation vulnerability in the device firmware.Information may be obtained and information may be altered. The ZyXEL GS1900 is a managed switch from ZyXEL, Taiwan.

A security hole exists in the Zyxel GS1900 using firmware 2.50 (AAHH.0) prior to C0. An attacker could exploit this vulnerability to access restricted features

Show details on source website

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