CVE-2019-18902

Service crash via invalid DHCPv6 client options

Published Mar 2, 2020 · Updated Sep 17, 2024

Use-after-free in wicked before its distribution-specific fixes allows remote attackers to crash the service via invalid DHCPv6 client options. SUSE identifies reception of invalid DHCPv6 client options as the trigger but has not published the parsing function, freed object, or subsequent stale access. Reachability requires unauthenticated DHCPv6 traffic to the client, and published assessments bound the impact from service interruption to potential code execution without a public demonstration.

CVSS severity9.8
Critical
EPSS probability2.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in wicked before its distribution-specific fixes allows remote attackers to crash the service via invalid DHCPv6 client options. SUSE identifies reception of invalid DHCPv6 client options as the trigger but has not published the parsing function, freed object, or subsequent stale access. Reachability requires unauthenticated DHCPv6 traffic to the client, and published assessments bound the impact from service interruption to potential code execution without a public demonstration.

The record

CVE
CVE-2019-18902
Published
Mar 2, 2020
Updated
Sep 17, 2024
Vendor
OpenSUSE
Product
openSUSE Leap
Classifications
CWE-416, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=wicked <0.6.60-lp151.2.6.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

OpenSUSE · openSUSE Leapversion=wicked <0.6.60-lp151.2.6.1
SUSE · SUSE Linux Enterprise Serverversion=wicked <0.6.60-3.21.1; version=wicked <0.6.60-3.5.1
OpenSUSE · openSUSE Factoryversion=wicked <0.6.62

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5SUSECVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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