Unauthenticated router crash via unchecked srcip formatting
Published Oct 26, 2022 · Updated May 7, 2025
Stack-based buffer overflow in D-Link DIR-816 A2 1.10 B05 allows remote attackers to crash the router via a crafted srcip value. The form2IPQoSTcAdd handler formats srcip content into a fixed-size stack buffer without checking its length. The request requires a token retrievable from the login page; the proof of concept demonstrates a crash, while shell access requires further control-flow exploitation.
Summary
What happened
Stack-based buffer overflow in D-Link DIR-816 A2 1.10 B05 allows remote attackers to crash the router via a crafted srcip value. The form2IPQoSTcAdd handler formats srcip content into a fixed-size stack buffer without checking its length. The request requires a token retrievable from the login page; the proof of concept demonstrates a crash, while shell access requires further control-flow exploitation.
The record
- CVE
- CVE-2022-42998
- Published
- Oct 26, 2022
- Updated
- May 7, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 26, 2022CVE publishedPublication date reported by the CVE source.
- May 7, 2025Record 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.
Weakness, pattern, technique
Public exploit references
- form2IPQoSTcAdd srcip stack-overflow proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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