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Bug 1633431 - (CVE-2018-14653) CVE-2018-14653 glusterfs: Heap-based buffer overflow via "gf_getspec_req" RPC message
CVE-2018-14653 glusterfs: Heap-based buffer overflow via "gf_getspec_req" RPC...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20181031:0800,...
: Security
Depends On: 1644584 1644756 1647664 1647670 1616829 1634668
Blocks: 1633432 1644080
  Show dependency treegraph
 
Reported: 2018-09-26 21:48 EDT by Sam Fowler
Modified: 2018-11-16 02:29 EST (History)
31 users (show)

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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.
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3431 None None None 2018-10-31 04:43 EDT
Red Hat Product Errata RHSA-2018:3432 None None None 2018-10-31 04:44 EDT
Red Hat Product Errata RHSA-2018:3470 None None None 2018-11-05 09:58 EST

  None (edit)
Description Sam Fowler 2018-09-26 21:48:19 EDT
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 2018-09-26 21:48:29 EDT
Acknowledgments:

Name: Michael Hanselmann (hansmi.ch)
Comment 5 Doran Moppert 2018-10-29 20:21:16 EDT
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 04:12:58 EDT
Created glusterfs tracking bugs for this issue:

Affects: fedora-all [bug 1644584]
Comment 7 errata-xmlrpc 2018-10-31 04:43:22 EDT
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 04:44:25 EDT
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 10 errata-xmlrpc 2018-11-05 09:58:26 EST
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

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