Unauthenticated code execution via unbounded AddMacList parsing
Published Aug 25, 2022 · Updated Aug 3, 2024
Stack overflow in H3C H200 firmware H200V100R004 allows remote attackers to execute code through a crafted AddMacList request. AddMacList parses the attacker-controlled param value with sscanf using an unbounded %[^;] conversion into a fixed-size stack buffer. No authentication or user interaction is required; the published proof demonstrates process interruption and states that a crafted payload obtains a root shell.
Summary
What happened
Stack overflow in H3C H200 firmware H200V100R004 allows remote attackers to execute code through a crafted AddMacList request. AddMacList parses the attacker-controlled param value with sscanf using an unbounded %[^;] conversion into a fixed-size stack buffer. No authentication or user interaction is required; the published proof demonstrates process interruption and states that a crafted payload obtains a root shell.
The record
- CVE
- CVE-2022-37093
- Published
- Aug 25, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- H3C H200 AddMacList proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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