Unauthenticated service termination via unchecked input length
Published Jun 20, 2022 · Updated Sep 17, 2024
Heap-based buffer overflow in National Health Insurance Administration NHI Health Insurance Web Service Component allows remote attackers to terminate service. A component function fails to validate input string length before copying into a reserved heap buffer, allowing a crafted request to overrun memory. No authentication is required, and successful exploitation interrupts the service until a system restart; confidentiality and integrity impacts are not reported.
Summary
What happened
Heap-based buffer overflow in National Health Insurance Administration NHI Health Insurance Web Service Component allows remote attackers to terminate service. A component function fails to validate input string length before copying into a reserved heap buffer, allowing a crafted request to overrun memory. No authentication is required, and successful exploitation interrupts the service until a system restart; confidentiality and integrity impacts are not reported.
The record
- CVE
- CVE-2021-45918
- Published
- Jun 20, 2022
- Updated
- Sep 17, 2024
- Vendor
- National Health Insurance Administration
- Product
- NHI Health Insurance Web Service Component
- Classifications
- CWE-122, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 20, 2022CVE publishedPublication date reported by the CVE source.
- Sep 17, 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=42fcc36541e716e23de77d5f325b186a
- Affected versionversion=515BE7DE5BCE446177FEE8A6E0665093
- Affected versionversion=52EACB7CA2B4D0A5A869DF01079BF4D6
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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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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