Authenticated code execution via wan_type stack overflow
Published Jun 15, 2020 · Updated Aug 4, 2024
Stack-based buffer overflow in the ssi binary in TRENDnet TEW-827DRU through 2.06B04 allows remote authenticated users to execute code. The apply.cgi handlers for st_dev_connect, st_dev_disconnect, and st_dev_rconnect accept an oversized wan_type value without enforcing the destination stack-buffer length. Access to the authenticated management interface is required; successful exploitation executes arbitrary code on the router.
Summary
What happened
Stack-based buffer overflow in the ssi binary in TRENDnet TEW-827DRU through 2.06B04 allows remote authenticated users to execute code. The apply.cgi handlers for st_dev_connect, st_dev_disconnect, and st_dev_rconnect accept an oversized wan_type value without enforcing the destination stack-buffer length. Access to the authenticated management interface is required; successful exploitation executes arbitrary code on the router.
The record
- CVE
- CVE-2020-14076
- Published
- Jun 15, 2020
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 15, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Public exploit references
- st_dev_disconnect overflow proof of conceptproof of concept · unverified
- st_dev_connect overflow proof of conceptproof of concept · unverified
- st_dev_rconnect overflow proof of conceptproof of concept · unverified
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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