CVE-2016-4303
9.8
CRITICAL · CVSS 3.1 · EPSS 7% (pctl 94)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 6.96% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-120 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2016-09-26 |
| Last modified | 2026-06-17 |
Affected (5)
| Vendor | Product |
|---|---|
| debian | debian linux |
| es | iperf3 |
| novell | suse package hub for suse linux enterprise |
| opensuse | leap |
| opensuse | opensuse |
References
- http://blog.talosintel.com/2016/06/esnet-vulnerability.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00082.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00090.html
- http://software.es.net/iperf/news.html#security-issue-iperf-3-1-3-iperf-3-0-12-released
- http://www.talosintelligence.com/reports/TALOS-2016-0164/
- https://github.com/esnet/iperf/commit/91f2fa59e8ed80dfbf400add0164ee0e508e412a
- https://lists.debian.org/debian-lts-announce/2020/01/msg00023.html
- https://raw.githubusercontent.com/esnet/security/master/cve-2016-4303/esnet-secadv-2016-0001.txt.asc
- http://blog.talosintel.com/2016/06/esnet-vulnerability.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00082.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00090.html
- http://software.es.net/iperf/news.html#security-issue-iperf-3-1-3-iperf-3-0-12-released
- http://www.talosintelligence.com/reports/TALOS-2016-0164/
- https://github.com/esnet/iperf/commit/91f2fa59e8ed80dfbf400add0164ee0e508e412a
- https://lists.debian.org/debian-lts-announce/2020/01/msg00023.html
- https://raw.githubusercontent.com/esnet/security/master/cve-2016-4303/esnet-secadv-2016-0001.txt.asc
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