Bug 2141898 (CVE-2022-44793)

Summary:	CVE-2022-44793 net-snmp: NULL Pointer Exception when handling pv6IpForwarding
Product:	[Other] Security Response	Reporter:	Sandipan Roy <saroy>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jridky, kyoshida
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Net-SNMP. This issue occurs because the handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP has a NULL Pointer Exception that could allow a remote attacker to cause the instance to crash via a crafted UDP packet, resulting in a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-16 16:37:15 UTC	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:	2141903, 2141904, 2141905, 2141906
Bug Blocks:	2141107

Description Sandipan Roy 2022-11-11 04:21:27 UTC

handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.4.3 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

https://github.com/net-snmp/net-snmp/issues/475
https://gist.github.com/menglong2234/d07a65b5028145c9f4e1d1db8c4c202f

Comment 1 Sandipan Roy 2022-11-11 04:29:09 UTC

Created net-snmp tracking bugs for this issue:

Affects: fedora-35 [bug 2141903]
Affects: fedora-36 [bug 2141904]

Comment 3 Josef Ridky 2023-01-16 08:02:12 UTC

Patch https://github.com/net-snmp/net-snmp/commit/be804106fd0771a7d05236cff36e199af077af57

Comment 4 errata-xmlrpc 2023-05-09 07:48:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2444 https://access.redhat.com/errata/RHSA-2023:2444

Comment 5 errata-xmlrpc 2023-05-16 08:36:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2969 https://access.redhat.com/errata/RHSA-2023:2969

Comment 6 Product Security DevOps Team 2023-05-16 16:37:14 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-44793