Glusterfs CVE-2018-14651

HIGH

Improper Link Resolution Before File Access (CWE-59)

2018-10-31 secalert@redhat.com

RCE Denial Of Service Debian Red Hat Debian Linux Enterprise Linux Glusterfs Gluster

8.8

CVSS 3.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-59 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V5 - File Handling Symlink resolution safety
Impact	CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 3.2% exploitation probability (EPSS)

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AnalysisAI

It was found that the fix for CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and CVE-2018-10926 was incomplete. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-59. It was found that the fix for CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and CVE-2018-10926 was incomplete. A remote, authenticated attacker could use one of these flaws to execute arbitrary code, create arbitrary files, or cause denial of service on glusterfs server nodes via symlinks to relative paths. Affected products include: Debian Debian Linux, Redhat Enterprise Linux, Gluster Glusterfs.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

It was found that the fix for CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and CVE-2018-10926 was incomplete. A remote, authenticated attacker could use one of these flaws to execute arbitrary code, create arbitrary files, or cause denial of service on glusterfs server nodes via symlinks to relative paths.

Threat Intelligence Overview

EPSS Score

3.2%

Top 13% exploitable

Data Quality

2 sources

Confidence: Low

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 3.2%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

No

Human Impact· derived

Medium

Priority Score

47

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +44

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

cpe:2.3:a:gluster:glusterfs:*:*:*:*:*:*:*:*

cpe:2.3:a:gluster:glusterfs:*:*:*:*:*:*:*:*

More in Glusterfs

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CVE-2023-26253 HIGH This Week POC

In Gluster GlusterFS 11.0, there is an xlators/mount/fuse/src/fuse-bridge.c notify stack-based buffer over-read. Rated h

CVE-2018-10929 HIGH This Week

A flaw was found in RPC request using gfs2_create_req in glusterfs server. Rated high severity (CVSS 8.8), this vulnerab

CVE-2018-10928 HIGH This Week

A flaw was found in RPC request using gfs3_symlink_req in glusterfs server which allows symlink destinations to point to

CVE-2018-10926 HIGH This Week

A flaw was found in RPC request using gfs3_mknod_req supported by glusterfs server. Rated high severity (CVSS 8.8), this

CVE-2018-10907 HIGH This Week

It was found that glusterfs server is vulnerable to multiple stack based buffer overflows due to functions in server-rpc

CVE-2018-10904 HIGH This Week

It was found that glusterfs server does not properly sanitize file paths in the "trusted.io-stats-dump" extended attribu

CVE-2018-10841 HIGH This Week

glusterfs is vulnerable to privilege escalation on gluster server nodes. Rated high severity (CVSS 8.8), this vulnerabil

CVE-2018-1112 HIGH This Week

glusterfs server before versions 3.10.12, 4.0.2 is vulnerable when using 'auth.allow' option which allows any unauthenti

CVE-2018-10927 HIGH This Week

A flaw was found in RPC request using gfs3_lookup_req in glusterfs server. Rated high severity (CVSS 8.1), this vulnerab

CVE-2018-10923 HIGH This Week

It was found that the "mknod" call derived from mknod(2) can create files pointing to devices on a glusterfs server node

CVE-2018-10911 HIGH This Week

A flaw was found in the way dic_unserialize function of glusterfs does not handle negative key length values. Rated high

CVE-2018-14660 MEDIUM This Month

A flaw was found in glusterfs server through versions 4.1.4 and 3.1.2 which allowed repeated usage of GF_META_LOCK_KEY x

Same weakness CWE-59 – Improper Link Resolution Before File Access

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References

Advisories & patches

PATCH https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14651 REF https://access.redhat.com/errata/RHSA-2018:3431 REF https://access.redhat.com/errata/RHSA-2018:3432 REF https://lists.debian.org/debian-lts-announce/2018/11/msg00003.html REF https://security.gentoo.org/glsa/201904-06

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