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Vulnerability · Published Jun 20, 2022 · Assigned by twcert

CVE-2021-45918NHI’s health insurance web service component – Heap-based Buffer Overflow

High 7.5

In plain English

A high-severity heap buffer overflow in health insurance web service component from NHI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.5%top 25.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

NHI’s health insurance web service component has insufficient validation for input string length, which can result in heap-based buffer overflow attack. A remote attacker can exploit this vulnerability to flood the memory space reserved for the program, in order to terminate service without authentication, which requires a system restart to recover service.

Affected products (as reported)

VendorProductVersions
NHI health insurance web service component 515BE7DE5BCE446177FEE8A6E0665093
NHI health insurance web service component 42fcc36541e716e23de77d5f325b186a
NHI health insurance web service component 52EACB7CA2B4D0A5A869DF01079BF4D6
NHI health insurance web service component 52EACB7CA2B4D0A5A869DF01079BF4D6

Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References