Bug 1201795 (CVE-2015-2153)

Summary:	CVE-2015-2153 tcpdump: tcp printer rpki_rtr_pdu_print() missing length check
Product:	[Other] Security Response	Reporter:	Martin Prpič <mprpic>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	athmanem, carnil, msekleta, thozza
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tcpdump 4.7.2	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-01 19:23:01 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:	1201799
Bug Blocks:	1201800, 1415638

Description Martin Prpič 2015-03-13 14:14:56 UTC

A flaw was found in tcpdump's TCP printer. A remote attacker could use this flaw to cause tcpdump to crash, resulting in a denial of service, or possibly execute arbitrary code.

Upstream patch:

http://www.ca.tcpdump.org/cve/0002-test-case-files-for-CVE-2015-2153-2154-2155.patch

Comment 1 Martin Prpič 2015-03-13 14:17:12 UTC

Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1201799]

Comment 2 Stefan Cornelius 2015-03-18 17:58:47 UTC

The problem here is a simple missing length check in the rpki_rtr_pdu_print() function in print-rpki-rtr.c when processing RPKI-RTR PDUs (Protocol Data Units) with an incorrect header length.

Without this check, the function will try to operate on invalid data when processing certain packets, leading to all kinds of unwanted side effects, including crashes due to invalid reads, writes and general memory corruption. 

Due to the memory corruption aspect I'm simply assuming that code execution may be a possibility (I've not performed an in-depth enough analysis to see if this assumption is really correct).

Comment 4 Fedora Update System 2015-03-30 07:00:57 UTC

tcpdump-4.7.3-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2015-03-31 21:44:21 UTC

tcpdump-4.7.3-1.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2015-04-18 09:48:09 UTC

tcpdump-4.5.1-4.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 errata-xmlrpc 2017-08-01 12:14:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1871 https://access.redhat.com/errata/RHSA-2017:1871