Bug 2059928 (CVE-2020-36516)

Summary:	CVE-2020-36516 kernel: off-path attacker may inject data or terminate victim's TCP session
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, allarkin, bhu, bskeggs, chwhite, crwood, dhoward, dvlasenk, eshatokhin, fhrbata, hdegoede, hkrzesin, jarod, jarodwilson, jburrell, jeremy, jfaracco, jforbes, jglisse, jlelli, joe.lawrence, jonathan, josef, jshortt, jstancek, jwboyer, jwyatt, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, lzampier, masami256, mchehab, nmurray, pabeni, ptalbert, qzhao, rvrbovsk, scweaver, steve.beattie, steved, vkumar, walters, williams, zulinx86
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Linux kernel 5.17-rc2	Doc Type:	If docs needed, set a value
Doc Text:	A TCP/IP packet spoofing attack flaw was found in the Linux kernel’s TCP/IP protocol, where a Man-in-the-Middle Attack (MITM) performs an IP fragmentation attack and an IPID collision. This flaw allows a remote user to pretend to be the sender of the TCP/IP packet for an existing TCP/IP session.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-12-05 12:21:18 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:	2059930, 2062425, 2062426, 2062427, 2062428
Bug Blocks:	2059931

Description Marian Rehak 2022-03-02 10:53:52 UTC

The mixed IPID assignment method with the hash-based IPID assignment policy allows an off-path attacker to inject data into a victim's TCP session or terminate that session.

Reference:

https://dl.acm.org/doi/10.1145/3372297.3417884

Comment 1 Marian Rehak 2022-03-02 10:54:21 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2059930]

Comment 13 errata-xmlrpc 2022-11-08 09:09:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:7444 https://access.redhat.com/errata/RHSA-2022:7444

Comment 14 errata-xmlrpc 2022-11-08 10:08:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:7683 https://access.redhat.com/errata/RHSA-2022:7683

Comment 15 errata-xmlrpc 2022-11-15 09:44:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:7933 https://access.redhat.com/errata/RHSA-2022:7933

Comment 16 errata-xmlrpc 2022-11-15 10:47:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:8267 https://access.redhat.com/errata/RHSA-2022:8267

Comment 17 Product Security DevOps Team 2022-12-05 12:21:14 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-2020-36516