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Vulnerabilities / CVE-2016-4303

critical

CVE-2016-4303

The parse_string function in cjson.c in the cJSON library mishandles U ...

Published Modified CWE 120
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Ubuntu (medium).

Description

The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a non-hex character in a JSON string, which triggers a heap-based buffer overflow.

Affected packages and fixed versions

SourcePackageFixed in
debian 11iperf33.1.3-1
debian 12iperf33.1.3-1
debian 13iperf33.1.3-1
debian 14iperf33.1.3-1
debian 8iperf33.0.7-1+deb8u1
echoiperf33.1.3-1
ubuntu 16.04-ESMiperf33.0.11-1ubuntu0.1~esm1

References

All 10 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.