Unauthenticated root RCE via unchecked ciphertext copy
Published Sep 16, 2024 · Updated Sep 18, 2024
Stack-based buffer overflow in HTTPD on ten ZTE ZXHN router firmware builds allows remote attackers to execute code as root. The webPrivateDecrypt function base64-decodes RSA ciphertext and copies the decoded bytes into a stack buffer without checking their length. Access to the router's HTTP server is sufficient; successful exploitation yields unauthenticated root-level control of the device.
Summary
What happened
Stack-based buffer overflow in HTTPD on ten ZTE ZXHN router firmware builds allows remote attackers to execute code as root. The webPrivateDecrypt function base64-decodes RSA ciphertext and copies the decoded bytes into a stack buffer without checking their length. Access to the router's HTTP server is sufficient; successful exploitation yields unauthenticated root-level control of the device.
The record
- CVE
- CVE-2024-45414
- Published
- Sep 16, 2024
- Updated
- Sep 18, 2024
- Vendor
- ZTE Corporation
- Product
- ZXHN H108N Firmware
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 16, 2024CVE publishedPublication date reported by the CVE source.
- Sep 18, 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=V2.6.20.ROST12
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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