Bug 1633431 (CVE-2018-14653)

Summary:	CVE-2018-14653 glusterfs: Heap-based buffer overflow via "gf_getspec_req" RPC message
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, anoopcs, atumball, bmcclain, dbaker, dblechte, dfediuck, eedri, humble.devassy, jokerman, jonathansteffan, kkeithle, matthias, mgoldboi, michal.skrivanek, ndevos, public, ramkrsna, rhs-bugs, sankarshan, sbonazzo, security-response-team, sfowler, sherold, sisharma, ssaha, sthangav, trankin, vbellur, yozone
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 buffer overflow on the heap was found in gf_getspec_req RPC request. A remote, authenticated attacker could use this flaw to cause denial of service and read arbitrary files on glusterfs server node.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:38:54 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:	1616829, 1634668, 1644584, 1644756, 1647664, 1647670
Bug Blocks:	1633432, 1644080

Description Sam Fowler 2018-09-27 01:48:19 UTC

The Gluster file system through versions 4.1.4 and 3.12 is vulnerable to a heap-based buffer overflow in the "__server_getspec" function via the "gf_getspec_req" RPC message. A remote authenticated attacker could exploit this to cause a denial of service or other potential unspecified impact.

Patching this issue also requires fixing the "build_volfile_path" function to prevent arbitrary file reads via crafted filenames.

Comment 1 Sam Fowler 2018-09-27 01:48:29 UTC

Acknowledgments:

Name: Michael Hanselmann (hansmi.ch)

Comment 5 Doran Moppert 2018-10-30 00:21:16 UTC

Statement:

This issue did not affect Red Hat Enterprise Linux 6 and 7 as the flaw is present in glusterfs-server, which is not shipped there.

This flaw affects glusterfs versions included in Red Hat Virtualization 4 Hypervisor. However, in recommended configurations, the vulnerability is only exposed to hypervisor administrators and can not be exploited from virtual machines or other hosts on the network.

Comment 6 Siddharth Sharma 2018-10-31 08:12:58 UTC

Created glusterfs tracking bugs for this issue:

Affects: fedora-all [bug 1644584]

Comment 7 errata-xmlrpc 2018-10-31 08:43:22 UTC

This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.4 for RHEL 6
  Native Client for RHEL 6 for Red Hat Storage

Via RHSA-2018:3431 https://access.redhat.com/errata/RHSA-2018:3431

Comment 8 errata-xmlrpc 2018-10-31 08:44:25 UTC

This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.4 for RHEL 7
  Native Client for RHEL 7 for Red Hat Storage

Via RHSA-2018:3432 https://access.redhat.com/errata/RHSA-2018:3432

Comment 9 Siddharth Sharma 2018-11-01 05:16:09 UTC

upstream fix:

https://review.gluster.org/#/c/glusterfs/+/21528/
https://review.gluster.org/#/c/glusterfs/+/21529/

Comment 10 errata-xmlrpc 2018-11-05 14:58:26 UTC

This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

Via RHSA-2018:3470 https://access.redhat.com/errata/RHSA-2018:3470