# CVE-2020-18770: zziplib: The zziplib is a lightweight library to easily extract data from zip files. Security Fix(es): * zziplib: invalid me... CVE-2020-18770 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2020-18770, released August 22, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2020-18770 - Priority: Routine - CVSS: 5.5 (Moderate) - EPSS: 0.0034 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 22, 2023 ## Description The zziplib is a lightweight library to easily extract data from zip files. Security Fix(es): * zziplib: invalid memory access at zzip_disk_entry_to_file_header in mmapped.c (CVE-2020-18770) 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 8.10 Release Notes linked from the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | zziplib Debian 13.5 (trixie) | 0.13.78+dfsg.1-0.1 | [DEBIAN-CVE-2020-18770](https://patchblox.com/security/data/fix/linux/debian-cve-2020-18770.md) | Aug 22, 2023 | | Linux | zziplib Debian 14 | 0.13.78+dfsg.1-0.1 | [DEBIAN-CVE-2020-18770](https://patchblox.com/security/data/fix/linux/debian-cve-2020-18770.md) | Aug 22, 2023 | | Linux | zziplib RHEL 8 | 0:0.13.68-13.el8_10 | [RHSA-2024:3127](https://patchblox.com/security/data/fix/linux/rhsa-2024-3127.md) | May 22, 2024 | | Linux | zziplib RHEL 9 | 0:0.13.71-11.el9_4 | [RHSA-2024:2377](https://patchblox.com/security/data/fix/linux/rhsa-2024-2377.md) | Apr 30, 2024 | | Linux | zziplib almalinux 8 | 0.13.68-13.el8_10 | [ALSA-2024:3127](https://patchblox.com/security/data/fix/linux/alsa-2024-3127.md) | May 22, 2024 | | Linux | zziplib almalinux 9 | 0.13.71-11.el9_4 | [ALSA-2024:2377](https://patchblox.com/security/data/fix/linux/alsa-2024-2377.md) | Apr 30, 2024 | | Linux | zziplib ol 8 | 0:0.13.68-13.el8_10 | [ELSA-2024-3127](https://patchblox.com/security/data/fix/linux/elsa-2024-3127.md) | May 23, 2024 | | Linux | zziplib ol 9 | 0:0.13.71-11.el9_4 | [ELSA-2024-2377](https://patchblox.com/security/data/fix/linux/elsa-2024-2377.md) | May 2, 2024 | | Linux | zziplib rocky 8 | 0:0.13.68-13.el8_10 | [RLSA-2024:3127](https://patchblox.com/security/data/fix/linux/rlsa-2024-3127.md) | May 7, 2025 | | Linux | zziplib rocky 9 | 0:0.13.71-11.el9_4 | [RLSA-2024:2377](https://patchblox.com/security/data/fix/linux/rlsa-2024-2377.md) | May 7, 2025 | | Linux | zziplib-devel RHEL 8 | 0:0.13.68-13.el8_10 | [RHSA-2024:3127](https://patchblox.com/security/data/fix/linux/rhsa-2024-3127.md) | May 22, 2024 | | Linux | zziplib-devel RHEL 9 | 0:0.13.71-11.el9_4 | [RHSA-2024:2377](https://patchblox.com/security/data/fix/linux/rhsa-2024-2377.md) | Apr 30, 2024 | | Linux | zziplib-devel almalinux 8 | 0.13.68-13.el8_10 | [ALSA-2024:3127](https://patchblox.com/security/data/fix/linux/alsa-2024-3127.md) | May 22, 2024 | | Linux | zziplib-devel almalinux 9 | 0.13.71-11.el9_4 | [ALSA-2024:2377](https://patchblox.com/security/data/fix/linux/alsa-2024-2377.md) | Apr 30, 2024 | | Linux | zziplib-devel ol 8 | 0:0.13.68-13.el8_10 | [ELSA-2024-3127](https://patchblox.com/security/data/fix/linux/elsa-2024-3127.md) | May 23, 2024 | | Linux | zziplib-devel ol 9 | 0:0.13.71-11.el9_4 | [ELSA-2024-2377](https://patchblox.com/security/data/fix/linux/elsa-2024-2377.md) | May 2, 2024 | | Linux | zziplib-utils RHEL 8 | 0:0.13.68-13.el8_10 | [RHSA-2024:3127](https://patchblox.com/security/data/fix/linux/rhsa-2024-3127.md) | May 22, 2024 | | Linux | zziplib-utils RHEL 9 | 0:0.13.71-11.el9_4 | [RHSA-2024:2377](https://patchblox.com/security/data/fix/linux/rhsa-2024-2377.md) | Apr 30, 2024 | | Linux | zziplib-utils almalinux 8 | 0.13.68-13.el8_10 | [ALSA-2024:3127](https://patchblox.com/security/data/fix/linux/alsa-2024-3127.md) | May 22, 2024 | | Linux | zziplib-utils almalinux 9 | 0.13.71-11.el9_4 | [ALSA-2024:2377](https://patchblox.com/security/data/fix/linux/alsa-2024-2377.md) | Apr 30, 2024 | | Linux | zziplib-utils ol 8 | 0:0.13.68-13.el8_10 | [ELSA-2024-3127](https://patchblox.com/security/data/fix/linux/elsa-2024-3127.md) | May 23, 2024 | | Linux | zziplib-utils ol 9 | 0:0.13.71-11.el9_4 | [ELSA-2024-2377](https://patchblox.com/security/data/fix/linux/elsa-2024-2377.md) | May 2, 2024 | --- Data as of 2026-11-08T06:59:42Z 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 Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.