Unauthenticated code execution via Cookie buffer overflow
Published Jul 15, 2021 · Updated Aug 4, 2024
Stack-based buffer overflow in D-Link DAP-1330 1.13B01 BETA and earlier allows remote attackers to execute code via an HTTP Cookie header. The splite_cookie() function in libhnap.so passes the attacker-controlled uid cookie value to strcpy without checking its length against the fixed-size stack buffer. The HNAP endpoint is reachable without authentication only from the LAN side under intended deployment, so successful exploitation grants code execution in the device context.
Summary
What happened
Stack-based buffer overflow in D-Link DAP-1330 1.13B01 BETA and earlier allows remote attackers to execute code via an HTTP Cookie header. The splite_cookie() function in libhnap.so passes the attacker-controlled uid cookie value to strcpy without checking its length against the fixed-size stack buffer. The HNAP endpoint is reachable without authentication only from the LAN side under intended deployment, so successful exploitation grants code execution in the device context.
The record
- CVE
- CVE-2021-34830
- Published
- Jul 15, 2021
- Updated
- Aug 4, 2024
- Vendor
- D-Link Corporation
- Product
- DAP-1330
- Classifications
- CWE-121, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 15, 2021CVE 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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Is a vulnerable build present?
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- Affected versionversion=1.13B01 BETA
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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Public exploit references
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Technologies
Your stack
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Your stack
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