CVE-2016-4303
CRITICAL
9.8
CVSS Score
Published: September 26, 2016 at 02:00 PM UTC
Updated: June 17, 2026 at 12:47 AM UTC
5 products affected across 4 vendorsDebian LinuxLeapopenSUSE
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Severity
CRITICAL9.8
Exploit prediction
EPSS 7%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%3.0 ≤ v < 3.0.123.1 ≤ v < 3.1.3
Affected range stops below 3.0.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.3, so it looks safe — our inference, not a vendor statement
Leap· openSUSEdrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (8)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
http://blog.talosintel.com/2016/06/esnet-vulnerability.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-updates/2016-08/msg00082.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-updates/2016-08/msg00090.htmlx_refsource_CONFIRMRelease NotesThird Party Advisory
Source: [email protected]
http://software.es.net/iperf/news.html#security-issue-iperf-3-1-3-iperf-3-0-12-releasedx_refsource_MISCExploitThird Party Advisory
Source: [email protected]
http://www.talosintelligence.com/reports/TALOS-2016-0164/x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/esnet/iperf/commit/91f2fa59e8ed80dfbf400add0164ee0e508e412aMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/01/msg00023.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://raw.githubusercontent.com/esnet/security/master/cve-2016-4303/esnet-secadv-2016-0001.txt.ascCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-120
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