Bug 2247308 (CVE-2023-5871)

Summary:	CVE-2023-5871 libnbd: Malicious NBD server may crash libnbd
Product:	[Other] Security Response	Reporter:	Rohit Keshri <rkeshri>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rjones, saroy, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libnbd 1.18.2	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in libnbd, due to a malicious Network Block Device (NBD), a protocol for accessing Block Devices such as hard disks over a Network. This issue may allow a malicious NBD server to cause a Denial of Service.	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:	2250809
Bug Blocks:	2247303

Description Rohit Keshri 2023-10-31 19:12:23 UTC

A malicious NBD server can easily crash libnbd

Refer:
https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/PFVUCMPFQUDC23JXSCUUPXIGDZ7XCFMD/

Comment 4 Sandipan Roy 2023-11-21 09:12:47 UTC

Created libnbd tracking bugs for this issue:

Affects: fedora-all [bug 2250809]

Comment 5 Vipul Nair 2023-12-10 11:06:28 UTC

Hey Rohit shouldn't the Availability in the CVSS be marked as high as this results in a crash? If not could you drop an email to NVD?

Comment 8 errata-xmlrpc 2024-04-30 09:47:57 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2204 https://access.redhat.com/errata/RHSA-2024:2204