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CVE-2022-45493: Buffer overflow vulnerability in function json_parse_key in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gai...

CVE-2022-45493 · published 3 years ago

Summary

Buffer overflow vulnerability in function json_parse_key in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.

What to do

Update json.h_project json.h to version 2022-11-14 or later.

Affected software

Vendor	Product	Affected versions
json.h_project	json.h	< 2022-11-14 `cpe:2.3:a:json.h_project:json.h::::::::`

Original advisory text

References

https://github.com/hyrathon/trophies/security/advisories/GHSA-r2mm-2f4c-6243 Vendor Advisory
https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/45xxx/CVE-2022-45493... Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2022-45493 Vendor Advisory

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit (estimated)
Gives an attacker full control (estimated)

Severity

7.8 High

Exploitation

<1% chance of attack within 30 days

Type

CWE-787Out-of-bounds Write

Timeline

Published3 Feb 2023

Updated4 Nov 2026

First seen29 Sep 2026

Sources

CVE-2022-45493 · NVD

CVE-2022-45493 · OSV

GHSA-r2mm-2f4c-6243 · GHSA

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