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CVE-2018-18384

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship...

5.5 MediumFix available

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.59%Up 1.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
CVE-2018-18384
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
CVE-2018-18384
Updated
2026-11-02
EUVDEUVD-2018-10115 No score

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
EUVD-2018-10115
Updated
2026-11-03
GitHub AdvisoriesGHSA-jjvf-xm75-cph5 5.5

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship...

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
GHSA-jjvf-xm75-cph5
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-119
Updated
2026-11-02
OSVALPINE-CVE-2018-18384 5.5

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
ALPINE-CVE-2018-18384
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-35340 5.5

CVE-2018-18384 affecting package unzip for versions less than 6.0-20

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
AZL-35340
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 12 moreShow less
OSVAZL-6942 5.5

CVE-2018-18384 affecting package unzip for versions less than 6.0-19

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
AZL-6942
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2018-18384 5.5

CVE-2018-18384 does not affect BellSoft software

Record
BELL-CVE-2018-18384
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 5.5

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
CVE-2018-18384
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-18384 5.5

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
DEBIAN-CVE-2018-18384
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2019:2159 3.3

Red Hat Security Advisory: unzip security update

Record
RHSA-2019:2159
CVSS 3.0
3.3 LowCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2018-18384 5.5

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Record
UBUNTU-CVE-2018-18384
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2019:1117-1 No score

Security update for unzip

This update for unzip fixes the following issues:

  • CVE-2018-18384: Fixed a buffer overflow when listing archives (bsc#1110194)

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

Record
openSUSE-SU-2019:1117-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11485-1 No score

unzip-6.00-39.1 on GA media

These are all security issues fixed in the unzip-6.00-39.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11485-1
Updated
2026-11-02
OSVSUSE-SU-2019:0707-1 No score

Security update for unzip

This update for unzip fixes the following issues:

  • CVE-2018-18384: Fixed a buffer overflow when listing archives (bsc#1110194)
Record
SUSE-SU-2019:0707-1
Updated
2026-11-02
OSVSUSE-SU-2019:13984-1 No score

Security update for unzip

This update for unzip fixes the following issues:

  • CVE-2018-18384: Fixed a buffer overflow when listing archives (bsc#1110194)
Record
SUSE-SU-2019:13984-1
Updated
2026-11-02
OSVSUSE-SU-2020:1796-1 No score

Security update for unzip

This update for unzip fixes the following issues:

  • CVE-2018-18384: Fixed a buffer overflow when listing files (bsc#1110194)
Record
SUSE-SU-2020:1796-1
Updated
2026-11-02
OSVUSN-4672-1 No score

unzip vulnerabilities

Rene Freingruber discovered that unzip incorrectly handled certain specially crafted password protected ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause a crash, resulting in a denial of service. (CVE-2018-1000035)

Antonio Carista discovered that unzip incorrectly handled certain specially crafted ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause a crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. (CVE-2018-18384)

It was discovered that unzip incorrectly handled certain specially crafted ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause resource consumption, resulting in a denial of service. (CVE-2019-13232)

Martin Carpenter discovered that unzip incorrectly handled certain specially crafted ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause a crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS. (CVE-2014-9913)

Alexis Vanden Eijnde discovered that unzip incorrectly handled certain specially crafted ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause a crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS. (CVE-2016-9844)

Record
USN-4672-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
unzip
Alpine:v3.11
 before 6.0-r7
6.0-r7
unzip
Alpine:v3.12
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.13
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.14
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.15
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.16
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.17
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.18
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.19
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.20
 before 6.0-r9
6.0-r9
Show 30 moreShow less
Affected packages
PackageAffectedFixed
unzip
Alpine:v3.21
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.22
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.23
 before 6.0-r9
6.0-r9
unzip
Alpine:v3.24
 before 6.0-r9
6.0-r9
unzip
Azure Linux:3
 before 6.0-20
6.0-20
unzip
Azure Linux:2
 before 6.0-19
6.0-19
unzip
Debian:12
 before 6.0-11
6.0-11
unzip
Debian:13
 before 6.0-11
6.0-11
unzip
Debian:14
 before 6.0-11
6.0-11
unzip
Red Hat:enterprise_linux:7::client
 before 0:6.0-20.el7
0:6.0-20.el7
unzip-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:6.0-20.el7
0:6.0-20.el7
unzip
Red Hat:enterprise_linux:7::computenode
 before 0:6.0-20.el7
0:6.0-20.el7
unzip-debuginfo
Red Hat:enterprise_linux:7::computenode
 before 0:6.0-20.el7
0:6.0-20.el7
unzip
Red Hat:enterprise_linux:7::server
 before 0:6.0-20.el7
0:6.0-20.el7
unzip-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:6.0-20.el7
0:6.0-20.el7
unzip
Red Hat:enterprise_linux:7::workstation
 before 0:6.0-20.el7
0:6.0-20.el7
unzip-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:6.0-20.el7
0:6.0-20.el7
unzip
SUSE:Linux Enterprise Module for Basesystem 15
 before 6.00-4.8.13
6.00-4.8.13
unzip
SUSE:Linux Enterprise Server 11 SP4
 before 6.00-11.18.8.1
6.00-11.18.8.1
unzip
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
 before 6.00-11.18.8.1
6.00-11.18.8.1
unzip
SUSE:Linux Enterprise Server 12 SP4
 before 6.00-33.13.3
6.00-33.13.3
unzip
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
 before 6.00-33.13.3
6.00-33.13.3
unzip
SUSE:Linux Enterprise Server 12 SP5
 before 6.00-33.13.3
6.00-33.13.3
unzip
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 6.00-33.13.3
6.00-33.13.3
unzip
Ubuntu:Pro:14.04:LTS
 before 6.0-9ubuntu1.6, plus listed versions
6.0-9ubuntu16.0-9ubuntu1.16.0-9ubuntu1.26.0-9ubuntu1.36.0-9ubuntu1.46.0-9ubuntu1.5
6.0-9ubuntu1.6
unzip
Ubuntu:16.04:LTS
 before 6.0-20ubuntu1.1, plus listed versions
6.0-17ubuntu16.0-19ubuntu16.0-19ubuntu26.0-20ubuntu1
6.0-20ubuntu1.1
unzip
Ubuntu:18.04:LTS
 before 6.0-21ubuntu1.1, plus listed versions
6.0-21ubuntu1
6.0-21ubuntu1.1
unzip
openSUSE:Leap 15.0
 before 6.00-lp150.8.3
6.00-lp150.8.3
unzip-rcc
openSUSE:Leap 15.0
 before 6.00-lp150.8.3
6.00-lp150.8.3
unzip
openSUSE:Tumbleweed
 before 6.00-39.1
6.00-39.1

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-2018-18384 is a medium vulnerability (CVSS 5.5) in Unzip Project Unzip, published October 16, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.59%, the 85th percentile. Fixed in unzip 6.0-r7.

References

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