All the vulnerabilites related to zyxel - nas540_firmware
Vulnerability from fkie_nvd
Published
2020-03-04 20:15
Modified
2024-11-21 05:39
Severity ?
Summary
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server does not run as the root user, ZyXEL devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable ZyXEL device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any ZyXEL device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 ZyXEL has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2
References
Impacted products
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Vulnerability from fkie_nvd
Published
2020-08-06 17:15
Modified
2024-11-21 05:01
Severity ?
Summary
Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| zyxel | nas326_firmware | * | |
| zyxel | nas326 | - | |
| zyxel | nas520_firmware | * | |
| zyxel | nas520 | - | |
| zyxel | nas540_firmware | * | |
| zyxel | nas540 | - | |
| zyxel | nas542_firmware | * | |
| zyxel | nas542 | - |
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"value": "Determinados productos Zyxel tienen un binario accesible localmente que permite a un usuario no root generar una contrase\u00f1a para una cuenta de usuario no documentada que puede ser usada para una sesi\u00f3n de TELNET como root. Esto afecta a NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, y V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, y V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 y V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 y 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, y V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 y V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; y NAS540 V5.21(AATB.5)C0 y V5.21(AATB.3)C0"
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Vulnerability from fkie_nvd
Published
2023-06-19 12:15
Modified
2024-11-21 07:53
Severity ?
Summary
The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| zyxel | nas326_firmware | * | |
| zyxel | nas326 | - | |
| zyxel | nas540_firmware | * | |
| zyxel | nas540 | - | |
| zyxel | nas542_firmware | * | |
| zyxel | nas542 | - |
{
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"cisaExploitAdd": "2023-06-23",
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Vulnerability from fkie_nvd
Published
2020-08-06 17:15
Modified
2024-11-21 05:01
Severity ?
Summary
A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| zyxel | nas326_firmware | * | |
| zyxel | nas326 | - | |
| zyxel | nas520_firmware | * | |
| zyxel | nas520 | - | |
| zyxel | nas540_firmware | * | |
| zyxel | nas540 | - | |
| zyxel | nas542_firmware | * | |
| zyxel | nas542 | - |
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Vulnerability from fkie_nvd
Published
2023-05-30 02:15
Modified
2024-11-21 07:53
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| zyxel | nas326_firmware | * | |
| zyxel | nas326 | - | |
| zyxel | nas540_firmware | * | |
| zyxel | nas540 | - | |
| zyxel | nas542_firmware | * | |
| zyxel | nas542 | - |
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cve-2020-9054
Vulnerability from cvelistv5
Published
2020-03-04 19:30
Modified
2024-09-16 17:14
Severity ?
EPSS score ?
Summary
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server does not run as the root user, ZyXEL devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable ZyXEL device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any ZyXEL device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 ZyXEL has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2
References
| ▼ | URL | Tags |
|---|---|---|
| https://cwe.mitre.org/data/definitions/78.html | x_refsource_MISC | |
| https://www.zyxel.com/support/remote-code-execution-vulnerability-of-NAS-products.shtml | x_refsource_CONFIRM | |
| https://kb.cert.org/vuls/id/498544/ | third-party-advisory, x_refsource_CERT-VN | |
| https://kb.cert.org/artifacts/cve-2020-9054.html | x_refsource_MISC | |
| https://krebsonsecurity.com/2020/02/zyxel-fixes-0day-in-network-storage-devices/ | x_refsource_MISC |
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▼ | ZyXEL | NAS326 |
Version: V5.21(AAZF.7)C0 < |
||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||
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cve-2023-27988
Vulnerability from cvelistv5
Published
2023-05-30 00:00
Modified
2025-01-14 16:26
Severity ?
EPSS score ?
Summary
The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | Zyxel | NAS326 firmware |
Version: < V5.21(AAZF.13)C0 |
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cve-2023-27992
Vulnerability from cvelistv5
Published
2023-06-19 11:42
Modified
2024-12-10 16:00
Severity ?
EPSS score ?
Summary
The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.
References
Impacted products
| Vendor | Product | Version | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ▼ | Zyxel | NAS326 firmware |
Version: < V5.21(AAZF.14)C0 |
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cve-2020-13365
Vulnerability from cvelistv5
Published
2020-08-06 16:56
Modified
2024-08-04 12:18
Severity ?
EPSS score ?
Summary
Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.
References
| ▼ | URL | Tags |
|---|---|---|
| https://www.zyxel.com/us/en/support/security_advisories.shtml | x_refsource_MISC | |
| https://www.zyxel.com/support/Zyxel-security-advisory-for-NAS-remote-access-vulnerability.shtml | x_refsource_MISC |
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cve-2020-13364
Vulnerability from cvelistv5
Published
2020-08-06 16:54
Modified
2024-08-04 12:18
Severity ?
EPSS score ?
Summary
A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.
References
| ▼ | URL | Tags |
|---|---|---|
| https://www.zyxel.com/us/en/support/security_advisories.shtml | x_refsource_MISC | |
| https://www.zyxel.com/support/Zyxel-security-advisory-for-NAS-remote-access-vulnerability.shtml | x_refsource_MISC |
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