CVE-2018-10911

Impact:
Moderate
Public Date:
2018-09-04
Bugzilla:
1601657: CVE-2018-10911 glusterfs: Improper deserialization in dict.c:dict_unserialize() can allow attackers to read arbitrary memory
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.

Find out more about CVE-2018-10911 from the MITRE CVE dictionary dictionary and NIST NVD.

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/.

CVSS v3 metrics

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact None
Availability Impact None

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (glusterfs) RHSA-2018:2892 2018-10-09
Red Hat Enterprise Linux 7 (glusterfs) RHSA-2018:3242 2018-10-30
Red Hat Storage Native Client for Red Hat Enterprise Linux 7 (glusterfs) RHSA-2018:2607 2018-09-04
Red Hat Storage Native Client for Red Hat Enterprise Linux 6 (glusterfs) RHSA-2018:2608 2018-09-04
Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts RHSA-2018:3470 2018-11-05
Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts RHSA-2018:2607 2018-09-04
Red Hat Gluster Storage 3.4 for RHEL 6 (glusterfs) RHSA-2018:2608 2018-09-04
Red Hat Gluster Storage 3.4 for RHEL 7 (glusterfs) RHSA-2018:2607 2018-09-04

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 8 glusterfs Affected

Acknowledgements

Red Hat would like to thank Michael Hanselmann (hansmi.ch) for reporting this issue.
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