Home/CVE/Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server o
CVE

CVE-2023-29451

Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server o

Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.

MEDIUM · CVSS 4.7 EPSS 0.00134
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
zabbix<= 6.0.14
zabbix>= 6.4.2 and <= 6.4.4
zabbixall versions
▣

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · security@zabbix.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Jul 2023 · 10:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2023/08/msg00027.html
https://support.zabbix.com/browse/ZBX-22587Vendor Advisory
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