Bug 2186490 (CVE-2023-26553)

Summary:	CVE-2023-26553 ntp: an out-of-bounds write when copying the trailing number
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	mlichvar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds write flaw was found in the ntp package. A remote attacker may trigger this vulnerability by sending malicious data packets to the ntp server. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2187696, 2187700
Bug Blocks:	2186078

Description Marian Rehak 2023-04-13 13:23:45 UTC

mstolfp.o belongs to the libntp component. As an upstream library, the libntp component can affect many other components, such as ntpd. A remote attacker may trigger this vulnerability by sending malicious data packets to the ntp server.

Comment 2 Marian Rehak 2023-04-18 12:56:31 UTC

Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 2187696]