Root access via restricted-console menu escape
Published Jun 25, 2021 · Updated Sep 16, 2024
Privilege escalation in Weidmüller IE-WL(T)-BL-AP-CL and IE-WL(T)-VL-AP-BR-CL firmware allows remote authenticated users to gain root access. The iw_console handler accepts a crafted menu-selection string that escapes the restricted command menu and passes attacker commands to the underlying system. A low-privilege account with network access to the Telnet or SSH console is required, and successful exploitation grants full device control.
Summary
What happened
Privilege escalation in Weidmüller IE-WL(T)-BL-AP-CL and IE-WL(T)-VL-AP-BR-CL firmware allows remote authenticated users to gain root access. The iw_console handler accepts a crafted menu-selection string that escapes the restricted command menu and passes attacker commands to the underlying system. A low-privilege account with network access to the Telnet or SSH console is required, and successful exploitation grants full device control.
The record
- CVE
- CVE-2021-33528
- Published
- Jun 25, 2021
- Updated
- Sep 16, 2024
- Vendor
- Weidmüller
- Product
- IE-WL(T)-BL-AP-CL
- Classifications
- CWE-710, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 25, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=IE-WL-BL-AP-CL-EU (2536600000) <=V1.16.18 (Build 18081617)
- Affected versionversion=IE-WL-BL-AP-CL-US (2536660000) <=V1.16.18 (Build 18081617)
- Affected versionversion=IE-WLT-BL-AP-CL-EU (2536650000) <=V1.16.18 (Build 18081617)
- Affected versionversion=IE-WLT-BL-AP-CL-US (2536670000) <=V1.16.18 (Build 18081617)
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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