Administrator-level code execution via unchecked format string
Published Sep 7, 2023 · Updated Sep 26, 2024
Format string injection in ASUS RT-AX55 and RT-AX56U V2 3.0.0.4.386_50460 allows remote authenticated users to execute code. The set_iperf3_cli.cgi API fails to validate an attacker-controlled format string before the iperf client function consumes it, enabling code execution or a service interruption. Administrator access to the router management interface is required, and successful exploitation permits arbitrary system operations or disruption.
Summary
What happened
Format string injection in ASUS RT-AX55 and RT-AX56U V2 3.0.0.4.386_50460 allows remote authenticated users to execute code. The set_iperf3_cli.cgi API fails to validate an attacker-controlled format string before the iperf client function consumes it, enabling code execution or a service interruption. Administrator access to the router management interface is required, and successful exploitation permits arbitrary system operations or disruption.
The record
- CVE
- CVE-2023-39240
- Published
- Sep 7, 2023
- Updated
- Sep 26, 2024
- Vendor
- ASUSTeK Computer Inc.
- Product
- RT-AX55
- Classifications
- CWE-134, CAPEC-135, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Sep 7, 2023CVE publishedPublication date reported by the CVE source.
- Sep 26, 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?
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- Affected versionversion=3.0.0.4.386_50460
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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