GlusterFS Key Length dic_unserialize Memory deserialization

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in GlusterFS. Affected by this issue is the function dic_unserialize of the component Key Length Handler. The manipulation leads to deserialization (Memory). This vulnerability is referenced as CVE-2018-10911. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in GlusterFS (the affected version is unknown) and classified as problematic. This issue affects the function dic_unserialize of the component Key Length Handler. The manipulation with an unknown input leads to a deserialization vulnerability (Memory). Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality. The summary by CVE is:

A flaw was found in the way dic_unserialize function of glusterfs does not handle negative key length values. An attacker could use this flaw to read memory from other locations into the stored dict value.

The bug was discovered 02/03/2018. The weakness was published 09/04/2018 by Michael Hanselmann as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2018-10911 since 05/09/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 213 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117317 (RHEL 7 : Gluster Storage (RHSA-2018:2607)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 256518 (CentOS Security Update for glusterfs (CESA-2018:2607)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117317) and SecurityFocus (BID 107577†). Similar entries are available at VDB-123577, VDB-123573, VDB-123574 and VDB-123576. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Memory
Class: Deserialization / Memory
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117317
Nessus Name: RHEL 7 : Gluster Storage (RHSA-2018:2607)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/03/2018 🔍
05/09/2018 +94 days 🔍
09/04/2018 +118 days 🔍
09/04/2018 +0 days 🔍
09/05/2018 +1 days 🔍
09/06/2018 +1 days 🔍
01/07/2019 +123 days 🔍
03/21/2019 +73 days 🔍
05/07/2023 +1508 days 🔍

Sourcesinfo

Advisory: RHSA-2018:2607
Researcher: Michael Hanselmann
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10911 (🔍)
GCVE (CVE): GCVE-0-2018-10911
GCVE (VulDB): GCVE-100-123575
SecurityFocus: 107577 - GlusterFS CVE-2018-10929 Arbitrary Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 09/05/2018 06:53
Updated: 05/07/2023 07:41
Changes: 09/05/2018 06:53 (75), 03/20/2020 15:37 (7), 05/07/2023 07:35 (4), 05/07/2023 07:41 (11)
Complete: 🔍
Cache ID: 216:19C:103

Be aware that VulDB is the high quality source for vulnerability data.

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