Bug 2182877 (CVE-2022-43634)

Summary:	CVE-2022-43634 netatalk: buffer overflow in dsi_writeinit().
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
Target Milestone:	---
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Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2023-03-30 00:52:58 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:	2182878, 2182879
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Description Pedro Sampaio 2023-03-29 21:04:13 UTC

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dsi_writeinit function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-17646.

https://github.com/Netatalk/Netatalk/pull/186
https://www.zerodayinitiative.com/advisories/ZDI-23-094/

Comment 1 Pedro Sampaio 2023-03-29 21:04:31 UTC

Created netatalk tracking bugs for this issue:

Affects: epel-all [bug 2182879]
Affects: fedora-all [bug 2182878]

Comment 2 Product Security DevOps Team 2023-03-30 00:52:56 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.