Bug 2040392 (CVE-2021-41043)

Summary:	CVE-2021-41043 tcpslice: use-after-free in extract_slice()
Product:	[Other] Security Response	Reporter:	Michael Kaplan <mkaplan>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	luhliari, mruprich, msehnout, msekleta, thozza
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tcpslice 1.5	Doc Type:	If docs needed, set a value
Doc Text:	A heap use-after-free flaw was found in tcpslices' extract_slice(). This flaw allows an attacker with local network access to pass a specially crafted 'pcap' file to tcpslice, causing segmentation fault. This vulnerability halts or crashes the application, leading to 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:	2040393, 2040395, 2041906
Bug Blocks:	2040396

Description Michael Kaplan 2022-01-13 16:03:46 UTC

Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.

References:
https://github.com/the-tcpdump-group/tcpslice/issues/11

Comment 1 Michael Kaplan 2022-01-13 16:04:21 UTC

Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 2040393]