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CVE-2021-31226

CRITICALCVSS 9.8/10EPSS 3.16%

Last modified

CVE-2021-31226 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. EPSS estimates a 3.16% chance of exploitation in the next 30 days.

Description

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
3.16%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Hcc-EmbeddedInterniche4.0.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-31226?
An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call.
How severe is CVE-2021-31226?
CVE-2021-31226 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.16% probability of exploitation in the next 30 days.
How do I fix CVE-2021-31226?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31226?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST