Bug 2255117 (CVE-2023-32726)

Summary:	CVE-2023-32726 zabbix: possible buffer overread form DNS responses
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	zabbix 5.0.40, zabbix 6.0.24, zabbix 6.4.9, zabbix 7.0.0alpha8	Doc Type:	---
Doc Text:	A flaw was discovered in Zabbix. In certain conditions, DNS requests can cause the application to read beyond the boundary of a defined memory buffer. This may lead to exposure of sensitive information, a system crash, or arbitrary code execution.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2255118, 2255119
Bug Blocks:	2255040

Description Robb Gatica 2023-12-18 18:06:27 UTC

Description:
This vulnerability is caused by improper check for RDLENGTH, if it overflows the buffer in response from DNS server.

Affected versions: 
5.0.0-5.0.39, 6.0.0-6.0.23, 6.4.0-6.4.8, 7.0.0alpha1-7.0.0alpha6

Reference: https://support.zabbix.com/browse/ZBX-23855

Comment 1 Robb Gatica 2023-12-18 18:06:44 UTC

Created zabbix tracking bugs for this issue:

Affects: epel-all [bug 2255118]
Affects: fedora-all [bug 2255119]