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CVE-2018-5739

Failure to release memory may exhaust system resources

Published: Jan 16, 2019Updated: Nov 21, 2024 Sources: CVE List NVDCWE-772
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
3.0%
Top 14.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

An extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library facilities. In order to support multiple requests simultaneously, Kea 1.4 added a callout handle store but unfortunately the initial implementation of this store does not properly free memory in every case. Hooks which make use of query4 or query6 parameters in their callouts can leak memory, resulting in the eventual exhaustion of available memory and subsequent failure of the server process. Affects Kea DHCP 1.4.0.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-772

Affected Products

Kea DHCPISCNetworking Infrastructure
keaiscNetworking Infrastructure
isccommercialUSNetworking Infrastructureaka internet systems consortium

Exploitability

Official Patch Available
Workaround Available

References

https://kb.isc.org/docs/aa-01626
kb.isc.org

Timeline

Published
Jan 16, 2019
Last Updated
Nov 21, 2024

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