CVE-2021-26730 - Vulnerability Details - OpenCVE

A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows 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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0039.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Lannerinc	Iac-ast2500a Iac-ast2500a Firmware

Configuration 1 [-]

AND

cpe:2.3:o:lannerinc:iac-ast2500a_firmware:1.10.0:*:*:*:*:*:*:*

cpe:2.3:h:lannerinc:iac-ast2500a:-:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2021-13517	A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows 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.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/
https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/

History

Wed, 07 May 2025 19:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Nozomi

Published: 2022-10-24T00:00:00.000Z

Updated: 2025-05-07T15:40:12.898Z

Reserved: 2021-02-05T00:00:00.000Z

Link: CVE-2021-26730

Vulnrichment

Updated: 2024-08-03T20:33:40.853Z

NVD

Status : Modified

Published: 2022-10-24T14:15:48.243

Modified: 2024-11-21T05:56:46.003

Link: CVE-2021-26730

Redhat

No data.

OpenCVE Enrichment

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-26730", "assignerOrgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "assignerShortName": "Nozomi", "dateUpdated": "2025-05-07T15:40:12.898Z", "dateReserved": "2021-02-05T00:00:00.000Z", "datePublished": "2022-10-24T00:00:00.000Z"}, "containers": {"cna": {"title": "spx_restservice Login_handler_func Subfunction Stack-Based Buffer Overflow", "providerMetadata": {"orgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "shortName": "Nozomi", "dateUpdated": "2022-12-01T00:00:00.000Z"}, "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows 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."}], "affected": [{"vendor": "Lanner Inc", "product": "IAC-AST2500A", "versions": [{"version": "1.10.0", "status": "affected"}]}], "references": [{"url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/"}, {"url": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/"}], "credits": [{"lang": "en", "value": "Andrea Palanca of Nozomi Networks found this bug during a security research activity."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 10, "baseSeverity": "CRITICAL"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-121 Stack-based Buffer Overflow", "cweId": "CWE-121"}]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "source": {"advisory": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/", "discovery": "EXTERNAL"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:33:40.853Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/", "tags": ["x_transferred"]}, {"url": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-05-07T15:38:33.435229Z", "id": "CVE-2021-26730", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-07T15:40:12.898Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/", "tags": ["x_transferred"]}, {"url": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:33:40.853Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-26730", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-05-07T15:38:33.435229Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-07T15:38:54.901Z"}}], "cna": {"title": "spx_restservice Login_handler_func Subfunction Stack-Based Buffer Overflow", "source": {"advisory": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "value": "Andrea Palanca of Nozomi Networks found this bug during a security research activity."}], "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 10, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "Lanner Inc", "product": "IAC-AST2500A", "versions": [{"status": "affected", "version": "1.10.0"}]}], "references": [{"url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/"}, {"url": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/"}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows 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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "CWE-121 Stack-based Buffer Overflow"}]}], "providerMetadata": {"orgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "shortName": "Nozomi", "dateUpdated": "2022-12-01T00:00:00.000Z"}}}, "cveMetadata": {"cveId": "CVE-2021-26730", "state": "PUBLISHED", "dateUpdated": "2025-05-07T15:40:12.898Z", "dateReserved": "2021-02-05T00:00:00.000Z", "assignerOrgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "datePublished": "2022-10-24T00:00:00.000Z", "assignerShortName": "Nozomi"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:lannerinc:iac-ast2500a_firmware:1.10.0:*:*:*:*:*:*:*", "matchCriteriaId": "8DD71184-078B-4B7E-BCB5-11E55B5928B7", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:lannerinc:iac-ast2500a:-:*:*:*:*:*:*:*", "matchCriteriaId": "9007683B-45DA-471A-9CCB-A587DED8D973", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows 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."}, {"lang": "es", "value": "Una vulnerabilidad de desbordamiento de b\u00fafer en la regi\u00f3n stack de la memoria en una subfunci\u00f3n de la funci\u00f3n Login_handler_func de spx_restservice permite a un atacante ejecutar c\u00f3digo arbitrario con los mismos privilegios que el usuario del servidor (root). Este problema afecta: Lanner Inc IAC-AST2500A versi\u00f3n de firmware est\u00e1ndar 1.10.0"}], "id": "CVE-2021-26730", "lastModified": "2024-11-21T05:56:46.003", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 6.0, "source": "prodsec@nozominetworks.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-10-24T14:15:48.243", "references": [{"source": "prodsec@nozominetworks.com", "tags": ["Third Party Advisory"], "url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/"}, {"source": "prodsec@nozominetworks.com", "tags": ["Third Party Advisory"], "url": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-26730/"}], "sourceIdentifier": "prodsec@nozominetworks.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "prodsec@nozominetworks.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}