Bug 1549707 (CVE-2017-18201)

Summary:	CVE-2017-18201 libcdio: Double free in get_cdtext_generic() in lib/driver/_cdio_generic.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	adrian, hhorak, jamartis, rocky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libcdio 2.0.0	Doc Type:	If docs needed, set a value
Doc Text:	A double-free flaw was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:41:42 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:	1549712, 1549713, 1553621
Bug Blocks:	1549715

Description Pedro Sampaio 2018-02-27 17:02:02 UTC

An issue was discovered in GNU libcdio before 2.0.0. There is a double free in get_cdtext_generic() in lib/driver/_cdio_generic.c.

Upstream patch:

https://git.savannah.gnu.org/cgit/libcdio.git/commit/?id=dec2f876c2d7162da213429bce1a7140cdbdd734

External References:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=887640

Comment 1 Pedro Sampaio 2018-02-27 17:08:59 UTC

Created libcdio tracking bugs for this issue:

Affects: fedora-all [bug 1549713]

Comment 6 rocky 2018-03-13 14:59:39 UTC

I am trying to understand the this bug tracking system. 

When I read:

> Affects: fedora-all [bug 1549713]

What does "fedora-all" mean? As noted previously, the bug was introduced sometime after 0.90 (definitely in 0.94) but fixed in 2.0.0

Comment 7 Adrian Reber 2018-03-13 15:02:20 UTC

I understand 'fedora-all' as all active releases. Currently that would be F26 and F27 with libcdio-0.94 and F-28 and rawhide with libcdio-2.0.0

I patched libcdio for F26 and F27. F28 and rawhide should be on the safe side with 2.0.0.

Comment 8 rocky 2018-03-13 15:12:42 UTC

Thanks for the clarification. So I gather rawhide is not considered to be in "fedora-all"?

Not a big deal. I'm just trying to understand these things in detail and wondering about how accurate such trackers are. Since I happen to know what's up with this one, I'm can it as a gauge for other bug reports where I really have no idea.

Comment 9 rocky 2018-03-13 15:14:09 UTC

I'm can it -> I can use it

Comment 10 errata-xmlrpc 2018-10-30 07:53:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3246 https://access.redhat.com/errata/RHSA-2018:3246