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Bug 1601657 - (CVE-2018-10911) CVE-2018-10911 glusterfs: Improper deserialization in dict.c:dict_unserialize() can allow attackers to read arbitrary memory
CVE-2018-10911 glusterfs: Improper deserialization in dict.c:dict_unserialize...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20180904:0530,...
: Security
Depends On: 1616829 1625082 1607386 1607407 1607717 1625079 1625089 1625656 1633291 1633303
Blocks: 1601660
  Show dependency tree / graph
 
Reported: 2018-07-16 20:38 EDT by Sam Fowler
Modified: 2018-10-30 03:52 EDT (History)
32 users (show)

See Also:
Fixed In Version: glusterfs 3.12.14, glusterfs 4.1.4
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in dict.c:dict_unserialize function of glusterfs, dic_unserialize function does not handle negative key length values. An attacker could use this flaw to read memory from other locations into the stored dict value.
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2607 None None None 2018-09-04 02:24 EDT
Red Hat Product Errata RHSA-2018:2608 None None None 2018-09-04 02:26 EDT
Red Hat Product Errata RHSA-2018:2892 None None None 2018-10-09 11:49 EDT
Red Hat Product Errata RHSA-2018:3242 None None None 2018-10-30 03:52 EDT

  None (edit)
Description Sam Fowler 2018-07-16 20:38:42 EDT 
GlusterFS has a deserialization vulnerability in the dict.c:dict_unserialize() function due to the improper handling of negative length values. An attacker could exploit via a crafted serialized dictionary to disclose arbitrary memory locations.
Comment 1 Sam Fowler 2018-07-16 20:38:52 EDT 
Acknowledgments:

Name: Michael Hanselmann (hansmi.ch)
Comment 7 Doran Moppert 2018-07-24 02:05:27 EDT 
Statement:

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. For Red Hat Virtualization, Product Security has rated this flaw as Moderate. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Comment 10 Siddharth Sharma 2018-09-04 01:43:53 EDT 
Created glusterfs tracking bugs for this issue:

Affects: fedora-all [bug 1625079]
Comment 12 errata-xmlrpc 2018-09-04 02:24:25 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-2018:2607 https://access.redhat.com/errata/RHSA-2018:2607
Comment 13 errata-xmlrpc 2018-09-04 02:25:52 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-2018:2608 https://access.redhat.com/errata/RHSA-2018:2608
Comment 14 Siddharth Sharma 2018-09-04 03:56:45 EDT 
upstream fix:

https://review.gluster.org/21067
Comment 17 errata-xmlrpc 2018-10-09 11:48:53 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:2892 https://access.redhat.com/errata/RHSA-2018:2892
Comment 18 errata-xmlrpc 2018-10-30 03:52:28 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3242 https://access.redhat.com/errata/RHSA-2018:3242
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