CVE-2016-4303

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Summary

CVECVE-2016-4303
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-09-26 14:59:01 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-120 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Es Iperf3 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
[SECURITY] [DLA 2080-1] iperf3 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
iperf3 Project News — iperf3 3.9 documentation af854a3a-2127-422b-91ae-364da2661108 software.es.net Release Notes, Third Party Advisory
openSUSE-SU-2016:2121-1: moderate: Security update for iperf af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
Cisco Talos Blog: Vulnerability Spotlight: ESnet iPerf3 JSON parse_string UTF Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 blog.talosintel.com Exploit, Third Party Advisory
openSUSE-SU-2016:2113-1: moderate: Security update for iperf af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
Fix a buffer overflow / heap corruption issue that could occur if a · esnet/iperf@91f2fa5 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
Cisco Talos - Talos 2016 0164 af854a3a-2127-422b-91ae-364da2661108 www.talosintelligence.com Exploit, Third Party Advisory
raw.githubusercontent.com/esnet/security/master/cve-2016-4303/esnet-secadv-2016-0001.tx... af854a3a-2127-422b-91ae-364da2661108 raw.githubusercontent.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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