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CVE-2018-17828

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary...

5.5 MediumFix available

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

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
High
Availability
None

Exploit likelihood

1.54%Up 1.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
CVE-2018-17828
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.0
5.8 MediumAV:N/AC:M/Au:N/C:N/I:P/A:P
Weakness
CWE-22
Updated
2026-11-02
CVE List No score

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
CVE-2018-17828
Updated
2026-11-02
EUVDEUVD-2018-9574 No score

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
EUVD-2018-9574
Updated
2026-11-02
GitHub AdvisoriesGHSA-g8rp-fvg9-52vv 5.5

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary...

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
GHSA-g8rp-fvg9-52vv
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVAZL-7014 5.5

CVE-2018-17828 affecting package zziplib for versions less than 0.13.69-8

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
AZL-7014
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVAZL-7458 5.5

CVE-2018-17828 affecting package zziplib for versions less than 0.13.69-8

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
AZL-7458
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
Show 17 moreShow less
OSV 5.5

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
CVE-2018-17828
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2018-17828 5.5

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
DEBIAN-CVE-2018-17828
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRHSA-2020:1178 5.5

Red Hat Security Advisory: zziplib security update

Record
RHSA-2020:1178
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRHSA-2020:1653 5.5

Red Hat Security Advisory: zziplib security update

Record
RHSA-2020:1653
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRHSA-2025:20478 5.5

Red Hat Security Advisory: zziplib security update

Record
RHSA-2025:20478
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRHSA-2025:20838 5.5

Red Hat Security Advisory: zziplib security update

Record
RHSA-2025:20838
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRLSA-2020:1653 5.5

Moderate: zziplib security update

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es):

  • zziplib: directory traversal in unzzip_cat in the bins/unzzipcat-mem.c (CVE-2018-17828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.2 Release Notes linked from the References section.

Record
RLSA-2020:1653
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRLSA-2025:20478 5.5

Moderate: zziplib security update

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es):

  • zziplib: directory traversal in unzzip_cat in the bins/unzzipcat-mem.c (CVE-2018-17828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 10 Release Notes linked from the References section.

Record
RLSA-2025:20478
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRLSA-2025:20838 5.5

Moderate: zziplib security update

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es):

  • zziplib: directory traversal in unzzip_cat in the bins/unzzipcat-mem.c (CVE-2018-17828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 9 Release Notes linked from the References section.

Record
RLSA-2025:20838
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2018-17828 5.5

Directory traversal vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file.

Record
UBUNTU-CVE-2018-17828
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVALSA-2020:1653 No score

Moderate: zziplib security update

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es):

  • zziplib: directory traversal in unzzip_cat in the bins/unzzipcat-mem.c (CVE-2018-17828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Record
ALSA-2020:1653
Updated
2026-11-02
OSVALSA-2025:20478 No score

Moderate: zziplib security update

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es):

  • zziplib: directory traversal in unzzip_cat in the bins/unzzipcat-mem.c (CVE-2018-17828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Record
ALSA-2025:20478
Updated
2026-11-02
OSVALSA-2025:20838 No score

Moderate: zziplib security update

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es):

  • zziplib: directory traversal in unzzip_cat in the bins/unzzipcat-mem.c (CVE-2018-17828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinuxRelease Notes linked from the References section.

Record
ALSA-2025:20838
Updated
2026-11-02
OSVMGASA-2019-0093 No score

Updated zziplib packages fix security vulnerability

In ZZIPlib 0.13.67, there is a segmentation fault caused by invalid memory access in the zzip_disk_fread function (zzip/mmapped.c) because the size variable is not validated against the amount of file->stored data (CVE-2018-6381).

An unaligned memory access bug was found in the way ZZIPlib handled ZIP files. This flaw could potentially be used to crash the application using ZZIPlib by tricking the application into processing specially crafted ZIP files (CVE-2018-6484).

In ZZIPlib 0.13.67, there is a bus error caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file (CVE-2018-6540).

A flaw was found in ZZIPlib 0.13.67, there is a bus error caused by loading of a misaligned address (when handling disk64_trailer local entries) in __zzip_fetch_disk_trailer (zzip/zip.c). Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file (CVE-2018-6541).

In ZZIPlib 0.13.67, there is a bus error (when handling a disk64_trailer seek value) caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c (CVE-2018-6542).

An uncontrolled memory allocation was found in ZZIPlib that could lead to a crash in the __zzip_parse_root_directory function of zzip/zip.c if the package is compiled with Address Sanitizer. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file (CVE-2018-6869).

An out of bounds read was found in function zzip_disk_fread of ZZIPlib, up to 0.13.68, when ZZIPlib mem_disk functionality is used. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file (CVE-2018-7725).

An improper input validation was found in function __zzip_fetch_disk_trailer of ZZIPlib, up to 0.13.68, that could lead to a crash in __zzip_parse_root_directory function of zzip/zip.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file (CVE-2018-7726).

A memory leak was found in unzip-mem.c and unzzip-mem.c of ZZIPlib, up to v0.13.68, that could lead to resource exhaustion. Local attackers could leverage this vulnerability to cause a denial of service via a crafted zip file (CVE-2018-7727).

An issue was discovered in ZZIPlib through 0.13.69. There is a memory leak triggered in the function __zzip_parse_root_directory in zip.c, which could lead to a denial of service attack (CVE-2018-16548).

A flaw was found in ZZIPlib 0.13.69. A directory traversal vulnerability allows attackers to overwrite arbitrary files via a .. (dot dot) in a zip file, because of the function unzzip_cat in the bins/unzzipcat-mem.c file (CVE-2018-17828).

Record
MGASA-2019-0093
Updated
2026-11-02
OSVopenSUSE-SU-2024:11546-1 No score

libzzip-0-13-0.13.72-1.4 on GA media

These are all security issues fixed in the libzzip-0-13-0.13.72-1.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11546-1
Updated
2026-11-02
OSVSUSE-SU-2018:3220-1 No score

Security update for zziplib

This update for zziplib fixes the following issues:

  • CVE-2018-17828: Remove any '../' components from pathnames of extracted files to avoid path traversal during unpacking. (bsc#1110687)
Record
SUSE-SU-2018:3220-1
Updated
2026-11-02
OSVSUSE-SU-2018:3379-1 No score

Security update for zziplib

This update for zziplib fixes the following issues:

  • CVE-2018-17828: Remove any '../' components from pathnames of extracted files to avoid path traversal during unpacking. (bsc#1110687)
Record
SUSE-SU-2018:3379-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
zziplib-devel
AlmaLinux:8
before 0.13.68-8.el8
0.13.68-8.el8
zziplib
AlmaLinux:10
before 0.13.78-2.el10
0.13.78-2.el10
zziplib-devel
AlmaLinux:10
before 0.13.78-2.el10
0.13.78-2.el10
zziplib-utils
AlmaLinux:10
before 0.13.78-2.el10
0.13.78-2.el10
zziplib
AlmaLinux:9
before 0.13.71-12.el9
0.13.71-12.el9
zziplib-devel
AlmaLinux:9
before 0.13.71-12.el9
0.13.71-12.el9
zziplib-utils
AlmaLinux:9
before 0.13.71-12.el9
0.13.71-12.el9
zziplib
Azure Linux:2
before 0.13.69-8
0.13.69-8
zziplib
Debian:12
All versions, plus listed versions
0.13.72+dfsg.1-1.10.13.72+dfsg.1-1.20.13.72+dfsg.1-1.2~exp10.13.72+dfsg.1-1.30.13.78+dfsg.1-0.10.13.78+dfsg.1-0.2
None known
zziplib
Debian:13
All versions, plus listed versions
0.13.78+dfsg.1-0.10.13.78+dfsg.1-0.2
None known
Show 58 moreShow less
Affected packages
PackageAffectedFixed
zziplib
Debian:14
All versions, plus listed versions
0.13.78+dfsg.1-0.10.13.78+dfsg.1-0.2
None known
zziplib
Mageia:6
From an advisory covering 11 CVEs
before 0.13.69-1.mga6
0.13.69-1.mga6
zziplib
Red Hat:enterprise_linux:7::client
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-debuginfo
Red Hat:enterprise_linux:7::client
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-devel
Red Hat:enterprise_linux:7::client
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-utils
Red Hat:enterprise_linux:7::client
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib
Red Hat:enterprise_linux:7::computenode
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-debuginfo
Red Hat:enterprise_linux:7::computenode
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-devel
Red Hat:enterprise_linux:7::computenode
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-utils
Red Hat:enterprise_linux:7::computenode
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib
Red Hat:enterprise_linux:7::server
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-debuginfo
Red Hat:enterprise_linux:7::server
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-devel
Red Hat:enterprise_linux:7::server
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-utils
Red Hat:enterprise_linux:7::server
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib
Red Hat:enterprise_linux:7::workstation
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-debuginfo
Red Hat:enterprise_linux:7::workstation
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-devel
Red Hat:enterprise_linux:7::workstation
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib-utils
Red Hat:enterprise_linux:7::workstation
before 0:0.13.62-12.el7
0:0.13.62-12.el7
zziplib
Red Hat:enterprise_linux:8::appstream
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-debuginfo
Red Hat:enterprise_linux:8::appstream
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-debugsource
Red Hat:enterprise_linux:8::appstream
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-utils
Red Hat:enterprise_linux:8::appstream
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-utils-debuginfo
Red Hat:enterprise_linux:8::appstream
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-debuginfo
Red Hat:enterprise_linux:8::crb
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-debugsource
Red Hat:enterprise_linux:8::crb
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-devel
Red Hat:enterprise_linux:8::crb
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib-utils-debuginfo
Red Hat:enterprise_linux:8::crb
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib
Red Hat:enterprise_linux:10.1
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib-debuginfo
Red Hat:enterprise_linux:10.1
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib-debugsource
Red Hat:enterprise_linux:10.1
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib-utils
Red Hat:enterprise_linux:10.1
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib-utils-debuginfo
Red Hat:enterprise_linux:10.1
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib-devel
Red Hat:enterprise_linux:10.1
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib
Red Hat:enterprise_linux:9::appstream
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-debuginfo
Red Hat:enterprise_linux:9::appstream
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-debugsource
Red Hat:enterprise_linux:9::appstream
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-utils
Red Hat:enterprise_linux:9::appstream
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-utils-debuginfo
Red Hat:enterprise_linux:9::appstream
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-debuginfo
Red Hat:enterprise_linux:9::crb
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-debugsource
Red Hat:enterprise_linux:9::crb
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-devel
Red Hat:enterprise_linux:9::crb
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib-utils-debuginfo
Red Hat:enterprise_linux:9::crb
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib
Rocky Linux:8
before 0:0.13.68-8.el8
0:0.13.68-8.el8
zziplib
Rocky Linux:10
before 0:0.13.78-2.el10
0:0.13.78-2.el10
zziplib
Rocky Linux:9
before 0:0.13.71-12.el9
0:0.13.71-12.el9
zziplib
SUSE:Linux Enterprise Module for Basesystem 15
before 0.13.69-3.3.1
0.13.69-3.3.1
zziplib
SUSE:Linux Enterprise Desktop 12 SP3
before 0.13.67-10.14.1
0.13.67-10.14.1
zziplib
SUSE:Linux Enterprise Software Development Kit 12 SP3
before 0.13.67-10.14.1
0.13.67-10.14.1
zziplib
SUSE:Linux Enterprise Workstation Extension 12 SP3
before 0.13.67-10.14.1
0.13.67-10.14.1
zziplib
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
0.13.62-30.13.62-3ubuntu0.16.04.10.13.62-3ubuntu0.16.04.20.13.62-3ubuntu0.16.04.2+esm1
None known
zziplib
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
0.13.62-3.10.13.62-3.1ubuntu0.18.04.10.13.62-3.1ubuntu0.18.04.1+esm1
None known
zziplib
Ubuntu:20.04:LTS
All versions, plus listed versions
0.13.62-3.20.13.62-3.2ubuntu10.13.62-3.2ubuntu1.1
None known
zziplib
Ubuntu:22.04:LTS
All versions, plus listed versions
0.13.72+dfsg.1-1.1
None known
zziplib
Ubuntu:24.04:LTS
All versions, plus listed versions
0.13.72+dfsg.1-1.10.13.72+dfsg.1-1.20.13.72+dfsg.1-1.2build1
None known
zziplib
Ubuntu:25.10
All versions, plus listed versions
0.13.78+dfsg.1-0.1
None known
zziplib
Ubuntu:26.10
All versions, plus listed versions
0.13.78+dfsg.1-0.2
None known
zziplib
Ubuntu:26.04:LTS
All versions, plus listed versions
0.13.78+dfsg.1-0.10.13.78+dfsg.1-0.2
None known
zziplib
openSUSE:Tumbleweed
From an advisory covering 14 CVEs
before 0.13.72-1.4
0.13.72-1.4

History

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

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

In short

CVE-2018-17828 is a medium vulnerability (CVSS 5.5) in Gdraheim Zziplib, published October 1, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.54%, the 75th percentile. Fixed in zziplib-devel 0.13.68-8.el8.

References

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