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CVE-2018-1000035

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of...

7.8 HighFix available

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

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
High
Integrity
High
Availability
High

Exploit likelihood

30.1%Up 28.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.8

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
CVE-2018-1000035
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-787
Updated
2026-11-02
CVE List No score

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
CVE-2018-1000035
Updated
2026-11-02
EUVDEUVD-2018-1796 No score

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
EUVD-2018-1796
Updated
2026-11-03
GitHub AdvisoriesGHSA-v5xf-cfj4-rv57 7.8

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of...

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
GHSA-v5xf-cfj4-rv57
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
OSVALPINE-CVE-2018-1000035 7.8

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
ALPINE-CVE-2018-1000035
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVAZL-35339 7.8

CVE-2018-1000035 affecting package unzip for versions less than 6.0-20

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
AZL-35339
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 11 moreShow less
OSVAZL-6941 7.8

CVE-2018-1000035 affecting package unzip for versions less than 6.0-19

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
AZL-6941
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVBELL-CVE-2018-1000035 7.8

CVE-2018-1000035 does not affect BellSoft software

Record
BELL-CVE-2018-1000035
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSV 7.8

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
CVE-2018-1000035
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-1000035 7.8

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
DEBIAN-CVE-2018-1000035
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-1000035 7.8

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Record
UBUNTU-CVE-2018-1000035
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2018-0422 No score

Updated unzip packages fix security vulnerabilities

Updated unzip packages fix security vulnerabilities

Heap-based out-of-bounds write (CVE-2018-1000031).

Heap/BSS-based buffer overflow (Bypass of CVE-2015-1315) (CVE-2018-1000032).

Heap out-of-bounds access in ef_scan_for_stream (CVE-2018-1000033).

Multiple vulnerabilities in the LZMA compression algorithm (CVE-2018-1000034).

Heap-based buffer overflow in password protected ZIP archives (CVE-2018-1000035).

Record
MGASA-2018-0422
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-2018:0465-1 No score

Security update for unzip

This update for unzip fixes the following issues:

  • CVE-2018-1000035: Fixed a heap-based buffer overflow in password protected ZIP archives (bsc#1080074)
Record
SUSE-SU-2018:0465-1
Updated
2026-11-02
OSVSUSE-SU-2018:1883-1 No score

Security update for unzip

This update for unzip fixes the following issues:

  • CVE-2014-9636: Prevent denial of service (out-of-bounds read or write and crash) via an extra field with an uncompressed size smaller than the compressed field size in a zip archive that advertises STORED method compression (bsc#914442)
  • CVE-2018-1000035: Prevent heap-based buffer overflow in the processing of password-protected archives that allowed an attacker to perform a denial of service or to possibly achieve code execution (bsc#1080074)

This non-security issue was fixed:

+- Allow processing of Windows zip64 archives (Windows archivers set total_disks field to 0 but per standard, valid values are 1 and higher) (bnc#910683)

Record
SUSE-SU-2018:1883-1
Updated
2026-11-02
OSVSUSE-SU-2018:2978-1 No score

Security update for unzip

This update for unzip fixes the following security issues:

  • CVE-2014-9913: Specially crafted zip files could trigger invalid memory writes possibly resulting in DoS or corruption (bsc#1013993)
  • CVE-2015-7696: Specially crafted zip files with password protection could trigger a crash and lead to denial of service (bsc#950110)
  • CVE-2015-7697: Specially crafted zip files could trigger an endless loop and lead to denial of service (bsc#950111)
  • CVE-2016-9844: Specially crafted zip files could trigger invalid memory writes possibly resulting in DoS or corruption (bsc#1013992)
  • CVE-2018-1000035: Prevent heap-based buffer overflow in the processing of password-protected archives that allowed an attacker to perform a denial of service or to possibly achieve code execution (bsc#1080074).
  • CVE-2014-9636: Prevent denial of service (out-of-bounds read or write and crash) via an extra field with an uncompressed size smaller than the compressed field size in a zip archive that advertises STORED method compression (bsc#914442).

This non-security issue was fixed:

+- Allow processing of Windows zip64 archives (Windows archivers set total_disks field to 0 but per standard, valid values are 1 and higher) (bnc#910683)

Record
SUSE-SU-2018:2978-1
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:v3.10
before 6.0-r3
6.0-r3
unzip
Alpine:v3.11
before 6.0-r3
6.0-r3
unzip
Alpine:v3.12
before 6.0-r3
6.0-r3
unzip
Alpine:v3.13
before 6.0-r3
6.0-r3
unzip
Alpine:v3.14
before 6.0-r3
6.0-r3
unzip
Alpine:v3.15
before 6.0-r3
6.0-r3
unzip
Alpine:v3.16
before 6.0-r3
6.0-r3
unzip
Alpine:v3.17
before 6.0-r3
6.0-r3
unzip
Alpine:v3.18
before 6.0-r3
6.0-r3
unzip
Alpine:v3.19
before 6.0-r3
6.0-r3
Show 27 moreShow less
Affected packages
PackageAffectedFixed
unzip
Alpine:v3.20
before 6.0-r3
6.0-r3
unzip
Alpine:v3.21
before 6.0-r3
6.0-r3
unzip
Alpine:v3.22
before 6.0-r3
6.0-r3
unzip
Alpine:v3.23
before 6.0-r3
6.0-r3
unzip
Alpine:v3.24
before 6.0-r3
6.0-r3
unzip
Alpine:v3.5
before 6.0-r3
6.0-r3
unzip
Alpine:v3.6
before 6.0-r3
6.0-r3
unzip
Alpine:v3.7
before 6.0-r3
6.0-r3
unzip
Alpine:v3.8
before 6.0-r3
6.0-r3
unzip
Alpine:v3.9
before 6.0-r3
6.0-r3
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 6.0-22
6.0-22
unzip
Debian:13
before 6.0-22
6.0-22
unzip
Debian:14
before 6.0-22
6.0-22
unzip
Debian:8
before 6.0-16+deb8u6, plus listed versions
6.0-166.0-16+deb8u16.0-16+deb8u26.0-16+deb8u36.0-16+deb8u46.0-16+deb8u5
6.0-16+deb8u6
unzip
Mageia:6
before 6.1c-1.1.mga6
6.1c-1.1.mga6
unzip
SUSE:Linux Enterprise Server 11 SP4
before 6.00-11.18.3.1
6.00-11.18.3.1
unzip
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
before 6.00-11.18.3.1
6.00-11.18.3.1
unzip
SUSE:Linux Enterprise Module for Basesystem 15
before 6.00-4.3.1
6.00-4.3.1
unzip
SUSE:Linux Enterprise Desktop 12 SP3
before 6.00-33.8.1
6.00-33.8.1
unzip
SUSE:Linux Enterprise Server 12 SP3
before 6.00-33.8.1
6.00-33.8.1
unzip
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
before 6.00-33.8.1
6.00-33.8.1
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: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-2018-1000035 is a high vulnerability (CVSS 7.8) in Unzip Project Unzip, published February 9, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 30.1%, the 98th percentile. Fixed in unzip 6.0-r3.

References

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