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CVE-2019-18903

wicked: Use-after-free when receiving invalid DHCP6 IA_PD option

7.5 High

A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory allows remote attackers to cause DoS or potentially code execution. This issue affects: SUSE Linux Enterprise Server 12 wicked versions prior to 0.6.60-2.18.1. SUSE Linux Enterprise Server 15 wicked versions prior to 0.6.60-28.26.1. openSUSE Leap 15.1 wicked versions prior to 0.6.60-lp151.2.9.1. openSUSE Factory wicked versions prior to 0.6.62.

Attack profile

How easy it is to exploit

Attack vector
Adjacent network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.42%Up 1.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.5

wicked: Use-after-free when receiving invalid DHCP6 IA_PD option

A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory allows remote attackers to cause DoS or potentially code execution. This issue affects: SUSE Linux Enterprise Server 12 wicked versions prior to 0.6.60-2.18.1. SUSE Linux Enterprise Server 15 wicked versions prior to 0.6.60-28.26.1. openSUSE Leap 15.1 wicked versions prior to 0.6.60-lp151.2.9.1. openSUSE Factory wicked versions prior to 0.6.62.

Record
CVE-2019-18903
CVSS 3.1
7.5 HighCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-02
EUVDEUVD-2019-8584 7.5

A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory allows remote attackers to cause DoS or potentially code execution. This issue affects: SUSE Linux Enterprise Server 12 wicked versions prior to 0.6.60-2.18.1. SUSE Linux Enterprise Server 15 wicked versions prior to 0.6.60-28.26.1. openSUSE Leap 15.1 wicked versions prior to 0.6.60-lp151.2.9.1. openSUSE Factory wicked versions prior to 0.6.62.

Record
EUVD-2019-8584
CVSS 3.1
7.5 HighCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-6gv4-2ccp-8f55 No score

A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux...

A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory allows remote attackers to cause DoS or potentially code execution. This issue affects: SUSE Linux Enterprise Server 12 wicked versions prior to 0.6.60-2.18.1. SUSE Linux Enterprise Server 15 wicked versions prior to 0.6.60-28.26.1. openSUSE Leap 15.1 wicked versions prior to 0.6.60-lp151.2.9.1. openSUSE Factory wicked versions prior to 0.6.62.

Record
GHSA-6gv4-2ccp-8f55
Updated
2026-11-02
NVD 7.5

A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory allows remote attackers to cause DoS or potentially code execution. This issue affects: SUSE Linux Enterprise Server 12 wicked versions prior to 0.6.60-2.18.1. SUSE Linux Enterprise Server 15 wicked versions prior to 0.6.60-28.26.1. openSUSE Leap 15.1 wicked versions prior to 0.6.60-lp151.2.9.1. openSUSE Factory wicked versions prior to 0.6.62.

Record
CVE-2019-18903
CVSS 3.1
7.5 HighCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-416
Updated
2026-11-02
OSVopenSUSE-SU-2020:0207-1 No score

Security update for wicked

This update for wicked fixes the following issues:

  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).

This update was imported from the SUSE:SLE-15-SP1:Update update project.

Record
openSUSE-SU-2020:0207-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11511-1 No score

wicked-0.6.66-1.2 on GA media

These are all security issues fixed in the wicked-0.6.66-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11511-1
Updated
2026-11-02
Show 6 moreShow less
OSVSUSE-SU-2020:0347-1 No score

Security update for wicked

This update for wicked fixes the following issues:

  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).
Record
SUSE-SU-2020:0347-1
Updated
2026-11-02
OSVSUSE-SU-2020:0351-1 No score

Security update for wicked

This update for wicked fixes the following issues:

Security issues fixed:

  • CVE-2019-18902: Fixed a use-after-free when receiving invalid DHCP6 client options (bsc#1160903).
  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7216: Fixed a potential denial of service via a memory leak when processing packets with missing message type option in DHCP4 (bsc#1160905).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).

Non-security issue fixed:

  • dhcp4: Fixed an intermittent hang during network setup by cleaning up the defer timer pointer (bsc#1142214).
Record
SUSE-SU-2020:0351-1
Updated
2026-11-02
OSVSUSE-SU-2020:0358-1 No score

Security update for wicked

This update for wicked fixes the following issues:

  • CVE-2019-18902: Fixed a use-after-free when receiving invalid DHCP6 client options (bsc#1160903).
  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7216: Fixed a potential denial of service via a memory leak when processing packets with missing message type option in DHCP4 (bsc#1160905).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).
Record
SUSE-SU-2020:0358-1
Updated
2026-11-02
OSVSUSE-SU-2020:0369-1 No score

Security update for wicked

This update for wicked fixes the following issues:

  • CVE-2019-18902: Fixed a use-after-free when receiving invalid DHCP6 client options (bsc#1160903).
  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7216: Fixed a potential denial of service via a memory leak when processing packets with missing message type option in DHCP4 (bsc#1160905).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).
Record
SUSE-SU-2020:0369-1
Updated
2026-11-02
OSVSUSE-SU-2020:0370-1 No score

Security update for wicked

This update for wicked fixes the following issues:

  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).
Record
SUSE-SU-2020:0370-1
Updated
2026-11-02
OSVSUSE-SU-2020:0410-1 No score

Security update for wicked

This update for wicked fixes the following issues:

  • CVE-2019-18902: Fixed a use-after-free when receiving invalid DHCP6 client options (bsc#1160903).
  • CVE-2019-18903: Fixed a use-after-free when receiving invalid DHCP6 IA_PD option (bsc#1160904).
  • CVE-2020-7216: Fixed a potential denial of service via a memory leak when processing packets with missing message type option in DHCP4 (bsc#1160905).
  • CVE-2020-7217: Fixed a memory leak in DHCP4 fsm when processing packets for other client ids (bsc#1160906).
Record
SUSE-SU-2020:0410-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wicked
SUSE:Linux Enterprise Module for Basesystem 15 SP1
From an advisory covering 2 CVEs
 before 0.6.60-3.13.1
0.6.60-3.13.1
wicked
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 4 CVEs
 before 0.6.60-3.5.1
0.6.60-3.5.1
wicked
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 4 CVEs
 before 0.6.60-3.5.1
0.6.60-3.5.1
wicked
SUSE:Linux Enterprise Server for SAP Applications 12 SP1
From an advisory covering 4 CVEs
 before 0.6.60-28.26.1
0.6.60-28.26.1
wicked
SUSE:Linux Enterprise Server 12 SP1-LTSS
From an advisory covering 4 CVEs
 before 0.6.60-28.26.1
0.6.60-28.26.1
wicked
SUSE:Linux Enterprise Desktop 12 SP4
From an advisory covering 4 CVEs
 before 0.6.60-2.18.1
0.6.60-2.18.1
wicked
SUSE:Linux Enterprise Server 12 SP4
From an advisory covering 4 CVEs
 before 0.6.60-2.18.1
0.6.60-2.18.1
wicked
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 4 CVEs
 before 0.6.60-2.18.1
0.6.60-2.18.1
wicked
SUSE:Linux Enterprise Module for Basesystem 15
From an advisory covering 2 CVEs
 before 0.6.60-3.24.1
0.6.60-3.24.1
wicked
SUSE:Linux Enterprise High Performance Computing 15-ESPOS
From an advisory covering 2 CVEs
 before 0.6.60-3.24.1
0.6.60-3.24.1
Show 5 moreShow less
Affected packages
PackageAffectedFixed
wicked
SUSE:Linux Enterprise High Performance Computing 15-LTSS
From an advisory covering 2 CVEs
 before 0.6.60-3.24.1
0.6.60-3.24.1
wicked
SUSE:Linux Enterprise Server 15-LTSS
From an advisory covering 2 CVEs
 before 0.6.60-3.24.1
0.6.60-3.24.1
wicked
SUSE:Linux Enterprise Server for SAP Applications 15
From an advisory covering 2 CVEs
 before 0.6.60-3.24.1
0.6.60-3.24.1
wicked
openSUSE:Leap 15.1
From an advisory covering 2 CVEs
 before 0.6.60-lp151.2.9.1
0.6.60-lp151.2.9.1
wicked
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
 before 0.6.66-1.2
0.6.66-1.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-18903 is a high vulnerability (CVSS 7.5) in Opensuse Factory, published February 6, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.42%, the 84th percentile. No source names a fixed version.

References

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