Successful exploitation of these vulnerabilities could allow an attacker to obtain full system access, keep the device from transmitting, escalate privileges, change credentials, and execute arbitrary code.
The following Electrolink transmitters are affected:
Electrolink transmitters are vulnerable to an authentication bypass vulnerability affecting the login cookie. An attacker can set an arbitrary value except ‘NO’ to the login cookie and have full system access.
CVE-2024-3741 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).
A CVSS v4 score has been calculated for CVE-2024-3741. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N).
The application is vulnerable to an unauthenticated parameter manipulation that allows an attacker to set the credentials to blank giving her access to the admin panel. Also vulnerable to account takeover and arbitrary password change.
CVE-2024-22179 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).
A CVSS v4 score has been calculated for CVE-2024-22179. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N).
The application suffers from a privilege escalation vulnerability. An attacker logged in as guest can escalate his privileges by poisoning the cookie to become administrator.
CVE-2024-22186 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has been calculated for CVE-2024-22186. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
The device allows an unauthenticated attacker to bypass authentication and modify the cookie to reveal hidden pages that allows more critical operations to the transmitter.
CVE-2024-21872 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A CVSS v4 score has been calculated for CVE-2024-21872. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).
An unauthenticated attacker can reset the board and stop transmitter operations by sending a specially-crafted GET request to the command.cgi gateway, resulting in a denial-of-service scenario.
CVE-2024-21846 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
A CVSS v4 score has been calculated for CVE-2024-21846. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N).
The devices allow access to an unprotected endpoint that allows MPFS file system binary image upload without authentication. The MPFS2 file system module provides a light-weight read-only file system that can be stored in external EEPROM, external serial flash, or internal flash program memory. This file system serves as the basis for the HTTP2 web server module, but is also used by the SNMP module and is available to other applications that require basic read-only storage capabilities. This can be exploited to overwrite the flash program memory that holds the web server’s main interfaces and execute arbitrary code.
CVE-2024-1491 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).
A CVSS v4 score has been calculated for CVE-2024-1491. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N).
Electrolink transmitters store credentials in clear-text. Use of these credentials could allow an attacker to access the system.
CVE-2024-3742 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A CVSS v4 score has been calculated for CVE-2024-3742. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).
Gjoko Krstic publicly reported these vulnerabilities on the internet after an unsuccessful attempt to contact Electrolink directly.
Electrolink has not responded to requests to work with CISA to mitigate these vulnerabilities. Users of the affected products are encouraged to contact Electrolink for additional information.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1491
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1491
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-21846
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-21846
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-21872
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-21872
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-22179
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-22179
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-22186
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-22186
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-3741
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-3741
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-3742
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-3742
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