# CVE-2018-17828: zziplib: The zziplib is a lightweight library to easily extract data from zip files.  Security Fix(es):  * zziplib: directory...

CVE-2018-17828 is fixed in 3 products on 1 platform, first by RHSA-2020:1653, released April 28, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-17828
- Priority: Routine
- CVSS: 5.5 (Moderate)
- EPSS: 0.0154
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 28, 2020

## Description

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 Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | zziplib RHEL 8 | 0:0.13.68-8.el8 | [RHSA-2020:1653](https://patchblox.com/security/data/fix/linux/rhsa-2020-1653.md) | Apr 28, 2020 |
| Linux | zziplib RHEL 9 | 0:0.13.71-12.el9 | [RHSA-2025:20838](https://patchblox.com/security/data/fix/linux/rhsa-2025-20838.md) | Nov 11, 2025 |
| Linux | zziplib almalinux 10 | 0.13.78-2.el10 | [ALSA-2025:20478](https://patchblox.com/security/data/fix/linux/alsa-2025-20478.md) | Nov 11, 2025 |
| Linux | zziplib almalinux 9 | 0.13.71-12.el9 | [ALSA-2025:20838](https://patchblox.com/security/data/fix/linux/alsa-2025-20838.md) | Nov 11, 2025 |
| Linux | zziplib ol 10 | 0:0.13.78-2.el10 | [ELSA-2025-20478-0](https://patchblox.com/security/data/fix/linux/elsa-2025-20478-0.md) | Nov 25, 2025 |
| Linux | zziplib ol 8 | 0:0.13.68-8.el8 | [ELSA-2020-1653](https://patchblox.com/security/data/fix/linux/elsa-2020-1653.md) | May 5, 2020 |
| Linux | zziplib ol 9 | 0:0.13.71-12.el9 | [ELSA-2025-20838](https://patchblox.com/security/data/fix/linux/elsa-2025-20838.md) | Nov 17, 2025 |
| Linux | zziplib rocky 10 | 0:0.13.78-2.el10 | [RLSA-2025:20478](https://patchblox.com/security/data/fix/linux/rlsa-2025-20478.md) | Nov 21, 2025 |
| Linux | zziplib rocky 9 | 0:0.13.71-12.el9 | [RLSA-2025:20838](https://patchblox.com/security/data/fix/linux/rlsa-2025-20838.md) | Nov 21, 2025 |
| Linux | zziplib-devel RHEL 8 | 0:0.13.68-8.el8 | [RHSA-2020:1653](https://patchblox.com/security/data/fix/linux/rhsa-2020-1653.md) | Apr 28, 2020 |
| Linux | zziplib-devel RHEL 9 | 0:0.13.71-12.el9 | [RHSA-2025:20838](https://patchblox.com/security/data/fix/linux/rhsa-2025-20838.md) | Nov 11, 2025 |
| Linux | zziplib-devel almalinux 10 | 0.13.78-2.el10 | [ALSA-2025:20478](https://patchblox.com/security/data/fix/linux/alsa-2025-20478.md) | Nov 11, 2025 |
| Linux | zziplib-devel almalinux 9 | 0.13.71-12.el9 | [ALSA-2025:20838](https://patchblox.com/security/data/fix/linux/alsa-2025-20838.md) | Nov 11, 2025 |
| Linux | zziplib-devel ol 10 | 0:0.13.78-2.el10 | [ELSA-2025-20478-0](https://patchblox.com/security/data/fix/linux/elsa-2025-20478-0.md) | Nov 25, 2025 |
| Linux | zziplib-devel ol 9 | 0:0.13.71-12.el9 | [ELSA-2025-20838](https://patchblox.com/security/data/fix/linux/elsa-2025-20838.md) | Nov 17, 2025 |
| Linux | zziplib-utils RHEL 8 | 0:0.13.68-8.el8 | [RHSA-2020:1653](https://patchblox.com/security/data/fix/linux/rhsa-2020-1653.md) | Apr 28, 2020 |
| Linux | zziplib-utils RHEL 9 | 0:0.13.71-12.el9 | [RHSA-2025:20838](https://patchblox.com/security/data/fix/linux/rhsa-2025-20838.md) | Nov 11, 2025 |
| Linux | zziplib-utils almalinux 10 | 0.13.78-2.el10 | [ALSA-2025:20478](https://patchblox.com/security/data/fix/linux/alsa-2025-20478.md) | Nov 11, 2025 |
| Linux | zziplib-utils almalinux 9 | 0.13.71-12.el9 | [ALSA-2025:20838](https://patchblox.com/security/data/fix/linux/alsa-2025-20838.md) | Nov 11, 2025 |
| Linux | zziplib-utils ol 10 | 0:0.13.78-2.el10 | [ELSA-2025-20478-0](https://patchblox.com/security/data/fix/linux/elsa-2025-20478-0.md) | Nov 25, 2025 |
| Linux | zziplib-utils ol 8 | 0:0.13.68-8.el8 | [ELSA-2020-1653](https://patchblox.com/security/data/fix/linux/elsa-2020-1653.md) | May 5, 2020 |
| Linux | zziplib-utils ol 9 | 0:0.13.71-12.el9 | [ELSA-2025-20838](https://patchblox.com/security/data/fix/linux/elsa-2025-20838.md) | Nov 17, 2025 |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo