Description
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | zlib | 1:1.3.dfsg-2 | — |
| Debian 13 | zlib | 1:1.3.dfsg-2 | — |
| Debian 12 | minizip | 1.1-8+deb12u1 | — |
| Debian 12 | zlib | No fix yet | — |
| Debian 10 | minizip | 1.1-8+deb10u1 | DLA-3670-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | zlib | 1:1.2.8.dfsg-1ubuntu1.1+esm3 | USN-7107-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | zlib | 1.2.13-150500.4.3.1 | SUSE-SU-2023:4215-1 |
| SLES 15 SP4 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| SLES 12 SP5 | zlib | 1.2.11-11.37.1 | SUSE-SU-2023:4216-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | zlib | 1.2.13-160000.3.1 | SUSE-SU-2026:21151-1 |
| SLES for SAP 12 SP5 | zlib | 1.2.11-11.37.1 | SUSE-SU-2023:4216-1 |
| SLES 16.0 | zlib | 1.2.13-160000.3.1 | SUSE-SU-2026:21151-1 |
| SLE Micro 6.2 | zlib | 1.2.13-160000.3.1 | SUSE-SU-2026:21013-1 |
| SLE Micro 6.1 | zlib | 1.2.13-slfo.1.1_2.1 | SUSE-SU-2026:20659-1 |
| SLE Micro 6.0 | zlib | 1.2.13-7.1 | SUSE-SU-2026:20709-1 |
| SLE Micro 5.5 | zlib | 1.2.13-150500.4.3.1 | SUSE-SU-2024:2431-1, SUSE-SU-2023:4215-1 |
| SLE Micro 5.4 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| SLE Micro 5.3 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| SLE Micro 5.2 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| SLE Micro 5.1 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| SUSE Manager Server 4.2 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| SUSE Manager Proxy 4.2 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | grype | 0.88.0-1.1 | openSUSE-SU-2025:14857-1 |
| openSUSE Leap 16.0 | zlib | 1.2.13-160000.3.1 | openSUSE-SU-2026:20487-1 |
| openSUSE Leap 15.5 | zlib | 1.2.13-150500.4.3.1 | SUSE-SU-2023:4215-1 |
| openSUSE Leap 15.4 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
| openSUSE Leap Micro 5.3 | zlib | 1.2.11-150000.3.48.1 | SUSE-SU-2023:4217-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | minizip | 1.3-r1 | — |
| Alpine v3.24 | qt6-qtwebengine | 6.6.0-r1 | — |
| Alpine v3.23 | minizip | 1.3-r1 | — |
| Alpine v3.23 | qt5-qtwebengine | 5.15.15-r4 | — |
| Alpine v3.23 | qt6-qtwebengine | 6.6.0-r1 | — |
| Alpine v3.22 | minizip | 1.3-r1 | — |
| Alpine v3.22 | qt5-qtwebengine | 5.15.15-r4 | — |
| Alpine v3.22 | qt6-qtwebengine | 6.6.0-r1 | — |
| Alpine v3.21 | minizip | 1.3-r1 | — |
| Alpine v3.21 | qt5-qtwebengine | 5.15.15-r4 | — |
| Alpine v3.21 | qt6-qtwebengine | 6.6.0-r1 | — |
| Alpine v3.20 | minizip | 1.3-r1 | — |
| Alpine v3.20 | qt5-qtwebengine | 5.15.15-r4 | — |
| Alpine v3.20 | qt6-qtwebengine | 6.6.0-r1 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | minizip | 1.3-r1 | — |
| Alpine v3.19 | qt5-qtwebengine | 5.15.15-r4 | — |
| Alpine v3.19 | qt6-qtwebengine | 6.6.0-r1 | — |
| Alpine v3.18 | minizip | 1.2.13-r1 | — |
| Alpine v3.18 | qt5-qtwebengine | 5.15.13-r9 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | zlib +4 | 1.2.11-33.amzn2023.0.5 | ALAS2023-2023-410 |
| Amazon Linux 2 | zlib +4 | 1.2.7-19.amzn2.0.3 | ALAS2-2023-2320 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | blosc | 1.21.6-1 | — |
| Azure Linux 3 | cloud-hypervisor | 32.0-2 | — |
| Azure Linux 3 | cloud-hypervisor-cvm | 38.0.72.2-1 | — |
| Azure Linux 3 | keras | 3.1.1-1 | — |
| Azure Linux 3 | libkml +3 | No fix yet | — |
| Azure Linux 3 | rubygem-mini_portile2 | 2.8.0-1 | — |
| Azure Linux 3 | rust | 1.75.0-1 | — |
| Azure Linux 3 | tcl | 8.6.13-3 | — |
| Azure Linux 3 | zlib | 1.3.1-1 | — |
| Azure Linux 2 (CBL-Mariner) | blosc +3 | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | boost | 1.76.0-4 | — |
| Azure Linux 2 (CBL-Mariner) | cloud-hypervisor | 32.0-2 | — |
| Azure Linux 2 (CBL-Mariner) | cloud-hypervisor-cvm | 38.0.72.2-1 | — |
| Azure Linux 2 (CBL-Mariner) | rubygem-mini_portile2 | 2.8.0-1 | — |
| Azure Linux 2 (CBL-Mariner) | rust | 1.72.0-5 | — |
| Azure Linux 2 (CBL-Mariner) | tcl | 8.6.13-3 | — |
| Azure Linux 2 (CBL-Mariner) | zlib | 1.2.13-2 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | zlib | 1.3-r1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pyminizip | <= 0.2.6 | — | GHSA-mq29-j5xf-cjwr |
Advisories 32
- WID-SEC-2023-2663 zlib: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 11, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- ICSA-26-202-06 Siemens CADRA CISA ICS & IT advisories · Jul 21, 2026
- NCSC-2026-0229 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Jul 14, 2026
- SSA-470355 SSA-470355: Zlib and Foxit Vulnerabilities in CADRA Siemens ProductCERT · Jul 14, 2026
- USN-7107-1 zlib vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- WID-SEC-2024-1637 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 1, 2026
- openSUSE-SU-2026:20487-1 Security update for zlib SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21151-1 Security update for zlib SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21013-1 Security update for zlib SUSE / openSUSE Security Updates · Apr 14, 2026
- SUSE-SU-2026:20709-1 Security update for zlib SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20659-1 Security update for zlib SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-3670-1 minizip - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2025:14857-1 grype-0.88.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4216-1 Security update for zlib SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4217-1 Security update for zlib SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4215-1 Security update for zlib SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2431-1 Security update for zlib SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1360 IBM DB2: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 25, 2026
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
- WID-SEC-2025-2359 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 23, 2025
- NCSC-2025-0334 Kwetsbaarheden verholpen in Oracle Fusion Middleware NCSC-NL (Netherlands) · Nov 21, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- VDE-2024-073 Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · May 22, 2025
- ICSA-25-044-09 Siemens SCALANCE W700 IEEE 802.11ax CISA ICS & IT advisories · May 6, 2025
- NCSC-2025-0061 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Feb 14, 2025
- NCSC-2025-0051 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Feb 11, 2025
- SSA-769027 SSA-769027: Multiple Vulnerabilities fixed in SCALANCE W700 IEEE 802.11ax devices before V3.0.0 Siemens ProductCERT · Feb 11, 2025
- NCSC-2024-0420 Kwetsbaarheden verholpen in Oracle MySQL NCSC-NL (Netherlands) · Oct 17, 2024
- NCSC-2024-0298 Kwetsbaarheden verholpen in Oracle Fusion Middleware NCSC-NL (Netherlands) · Jul 17, 2024
- ALAS2023-2023-410 Moderate: zlib security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 3, 2023
- ALAS2-2023-2320 Moderate: zlib security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 1, 2023
References
- https://github.com/madler/zlib/pull/843
- https://www.winimage.com/zLibDll/minizip.html
- https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4
- https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61
- https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356
- [oss-security] 20231020 CVE-2023-45853: overflows in MiniZip in zlib through 1.3 mailing-list
- [debian-lts-announce] 20231127 [SECURITY] [DLA 3670-1] minizip security update mailing-list
- https://security.netapp.com/advisory/ntap-20231130-0009/
- https://pypi.org/project/pyminizip/#history
- GLSA-202401-18 vendor-advisory
- [oss-security] 20240124 Re: CVE-2023-45853: overflows in MiniZip in zlib through 1.3 mailing-list