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CVE-2019-11579

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

5.3 MediumFix available

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

1.41%Up 0.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.3

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
CVE-2019-11579
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-125
Updated
2026-11-02
CVE List No score

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
CVE-2019-11579
Updated
2026-11-02
EUVDEUVD-2019-3249 No score

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
EUVD-2019-3249
Updated
2026-11-03
GitHub AdvisoriesGHSA-2gjm-hvmq-383v 5.3

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
GHSA-2gjm-hvmq-383v
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-119, CWE-125
Updated
2026-11-02
OSV 5.3

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
CVE-2019-11579
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2019-11579 5.3

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
DEBIAN-CVE-2019-11579
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2019-11579 5.3

dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.

Record
UBUNTU-CVE-2019-11579
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
dhcpcd5
Debian:12
 before 7.1.0-2
7.1.0-2
dhcpcd5
Debian:8
 before 6.0.5-2+deb8u1, plus listed versions
6.0.5-2
6.0.5-2+deb8u1
dhcpcd5
Ubuntu:Pro:14.04:LTS
 before 6.0.5-2+deb8u1build0.14.04.1~esm1, plus listed versions
5.5.6-16.0.5-1ubuntu16.0.5-1.16.0.5-2build0.14.04.1
6.0.5-2+deb8u1build0.14.04.1~esm1
dhcpcd5
Ubuntu:16.04:LTS
 All versions, plus listed versions
6.9.1-16.9.3-16.10.1-1
 None known
dhcpcd5
Ubuntu:18.04:LTS
 All versions, plus listed versions
6.11.5-0ubuntu1
 None known

History

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

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

In short

CVE-2019-11579 is a medium vulnerability (CVSS 5.3) in Dhcpcd Project Dhcpcd, published April 28, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. Fixed in dhcpcd5 7.1.0-2.

References

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