CVE-2018-25032

Python 3.8 and 4 others: Out-of-bounds Write

CVE-2018-25032 is fixed in 53 products on 2 platforms, first by lib32z1 1:1.2.11.dfsg-0ubuntu2.1, released March 25, 2022. 2 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms
CVSS
8.2
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.5173
98th percentile

zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Python 3.10 3.10.5 Python 3.10 3.10.5 Jun 6, 2022
Python 3.9 3.9.13 Python 3.9 3.9.13 May 17, 2022
Linux
klibc-utils · Ubuntu 18.04.6 LTS (bionic) 2.0.4-9ubuntu2.2+esm1 klibc-utils 2.0.4-9ubuntu2.2+esm1 Aug 5, 2022
klibc-utils · Ubuntu 20.04 LTS (focal) 2.0.7-1ubuntu5.2 klibc-utils 2.0.7-1ubuntu5.2 Aug 5, 2022
klibc-utils · Ubuntu 22.04.1 LTS (jammy) 2.0.10-4ubuntu0.1 klibc-utils 2.0.10-4ubuntu0.1 Aug 5, 2022
klibc-utils · Ubuntu 24.04.5 LTS (noble) 2.0.13-4ubuntu0.1 klibc-utils 2.0.13-4ubuntu0.1 Aug 5, 2022
lib32z1 · Ubuntu 18.04.6 LTS (bionic) 1:1.2.11.dfsg-0ubuntu2.1 lib32z1 1:1.2.11.dfsg-0ubuntu2.1 Mar 25, 2022
lib32z1 · Ubuntu 20.04 LTS (focal) 1:1.2.11.dfsg-2ubuntu1.3 lib32z1 1:1.2.11.dfsg-2ubuntu1.3 Mar 25, 2022
lib32z1 · Ubuntu 22.04.1 LTS (jammy) 1:1.2.11.dfsg-2ubuntu9 lib32z1 1:1.2.11.dfsg-2ubuntu9 Mar 25, 2022
lib64z1 · Ubuntu 18.04.6 LTS (bionic) 1:1.2.11.dfsg-0ubuntu2.1 lib64z1 1:1.2.11.dfsg-0ubuntu2.1 Mar 25, 2022
lib64z1 · Ubuntu 20.04 LTS (focal) 1:1.2.11.dfsg-2ubuntu1.3 lib64z1 1:1.2.11.dfsg-2ubuntu1.3 Mar 25, 2022
lib64z1 · Ubuntu 22.04.1 LTS (jammy) 1:1.2.11.dfsg-2ubuntu9 lib64z1 1:1.2.11.dfsg-2ubuntu9 Mar 25, 2022
libklibc · Ubuntu 18.04.6 LTS (bionic) 2.0.4-9ubuntu2.2+esm1 libklibc 2.0.4-9ubuntu2.2+esm1 Aug 5, 2022
libklibc · Ubuntu 20.04 LTS (focal) 2.0.7-1ubuntu5.2 libklibc 2.0.7-1ubuntu5.2 Aug 5, 2022
libklibc · Ubuntu 22.04.1 LTS (jammy) 2.0.10-4ubuntu0.1 libklibc 2.0.10-4ubuntu0.1 Aug 5, 2022
libklibc · Ubuntu 24.04.5 LTS (noble) 2.0.13-4ubuntu0.1 libklibc 2.0.13-4ubuntu0.1 Aug 5, 2022
libmariadb-dev-compat · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 libmariadb-dev-compat 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
libmariadb-dev-compat · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 libmariadb-dev-compat 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
libmariadb3 · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 libmariadb3 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
libmariadb3 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 libmariadb3 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
libmariadbd19 · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 libmariadbd19 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
libmariadbd19 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 libmariadbd19 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
libx32z1 · Ubuntu 18.04.6 LTS (bionic) 1:1.2.11.dfsg-0ubuntu2.1 libx32z1 1:1.2.11.dfsg-0ubuntu2.1 Mar 25, 2022
libx32z1 · Ubuntu 20.04 LTS (focal) 1:1.2.11.dfsg-2ubuntu1.3 libx32z1 1:1.2.11.dfsg-2ubuntu1.3 Mar 25, 2022
libx32z1 · Ubuntu 22.04.1 LTS (jammy) 1:1.2.11.dfsg-2ubuntu9 libx32z1 1:1.2.11.dfsg-2ubuntu9 Mar 25, 2022
libz-mingw-w64 · Debian 12.15 (bookworm) 1.2.11+dfsg-5 DEBIAN-CVE-2018-25032 Mar 25, 2022
libz-mingw-w64 · Debian 13.5 (trixie) 1.2.11+dfsg-5 DEBIAN-CVE-2018-25032 Mar 25, 2022
libz-mingw-w64 · Debian 14 1.2.11+dfsg-5 DEBIAN-CVE-2018-25032 Mar 25, 2022
mariadb-backup · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-backup 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-backup · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-backup 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-client · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-client 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-client · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-client 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-client-10.3 · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-client-10.3 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-client-10.6 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-client-10.6 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-client-core-10.3 · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-client-core-10.3 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-client-core-10.6 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-client-core-10.6 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-common · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-common 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-common · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-common 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-connect · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-connect 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-connect · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-connect 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-cracklib-password-check · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-cracklib-password-check 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-cracklib-password-check · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-cracklib-password-check 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-gssapi-client · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-gssapi-client 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-gssapi-client · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-gssapi-client 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-gssapi-server · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-gssapi-server 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-gssapi-server · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-gssapi-server 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-mroonga · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-mroonga 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-mroonga · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-mroonga 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-oqgraph · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-oqgraph 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-oqgraph · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-oqgraph 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-rocksdb · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-rocksdb 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-rocksdb · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-rocksdb 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-s3 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-s3 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-spider · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-spider 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-plugin-spider · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-plugin-spider 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-plugin-tokudb · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-plugin-tokudb 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-server · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-server 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-server · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-server 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-server-10.3 · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-server-10.3 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-server-10.6 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-server-10.6 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-server-core-10.3 · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-server-core-10.3 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-server-core-10.6 · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-server-core-10.6 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-test · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-test 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-test · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-test 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mariadb-test-data · Ubuntu 20.04 LTS (focal) 1:10.3.37-0ubuntu0.20.04.1 mariadb-test-data 1:10.3.37-0ubuntu0.20.04.1 Sep 27, 2023
mariadb-test-data · Ubuntu 22.04.1 LTS (jammy) 1:10.6.11-0ubuntu0.22.04.1 mariadb-test-data 1:10.6.11-0ubuntu0.22.04.1 Aug 27, 2022
mingw-zlib · rocky 8 0:1.2.8-10.el8 RLSA-2022:7813 Dec 27, 2025
mingw32-zlib · RHEL 8 0:1.2.8-10.el8 RHSA-2022:7813 Nov 8, 2022
mingw32-zlib · RHEL 9 0:1.2.12-2.el9 RHSA-2022:8420 Nov 15, 2022
mingw32-zlib · almalinux 8 1.2.8-10.el8 ALSA-2022:7813 Nov 8, 2022
mingw32-zlib · almalinux 9 1.2.12-2.el9 ALSA-2022:8420 Nov 15, 2022
mingw32-zlib · ol 9 0:1.2.12-2.el9 ELSA-2022-8420 Nov 22, 2022
mingw32-zlib-static · RHEL 8 0:1.2.8-10.el8 RHSA-2022:7813 Nov 8, 2022
mingw32-zlib-static · RHEL 9 0:1.2.12-2.el9 RHSA-2022:8420 Nov 15, 2022
mingw32-zlib-static · almalinux 8 1.2.8-10.el8 ALSA-2022:7813 Nov 8, 2022
mingw32-zlib-static · almalinux 9 1.2.12-2.el9 ALSA-2022:8420 Nov 15, 2022
mingw32-zlib-static · ol 9 0:1.2.12-2.el9 ELSA-2022-8420 Nov 22, 2022
mingw64-zlib · RHEL 8 0:1.2.8-10.el8 RHSA-2022:7813 Nov 8, 2022
mingw64-zlib · RHEL 9 0:1.2.12-2.el9 RHSA-2022:8420 Nov 15, 2022
mingw64-zlib · almalinux 8 1.2.8-10.el8 ALSA-2022:7813 Nov 8, 2022
mingw64-zlib · almalinux 9 1.2.12-2.el9 ALSA-2022:8420 Nov 15, 2022
mingw64-zlib · ol 9 0:1.2.12-2.el9 ELSA-2022-8420 Nov 22, 2022
mingw64-zlib-static · RHEL 8 0:1.2.8-10.el8 RHSA-2022:7813 Nov 8, 2022
mingw64-zlib-static · RHEL 9 0:1.2.12-2.el9 RHSA-2022:8420 Nov 15, 2022
mingw64-zlib-static · almalinux 8 1.2.8-10.el8 ALSA-2022:7813 Nov 8, 2022
mingw64-zlib-static · almalinux 9 1.2.12-2.el9 ALSA-2022:8420 Nov 15, 2022
mingw64-zlib-static · ol 9 0:1.2.12-2.el9 ELSA-2022-8420 Nov 22, 2022
minizip-compat · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
minizip-compat-debuginfo · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
minizip-compat-devel · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
rsync · RHEL 8 0:3.1.3-14.el8_6.2 RHSA-2022:2201 May 11, 2022
rsync · RHEL 9 0:3.2.3-9.el9_0.1 RHSA-2022:4592 May 18, 2022
rsync · Ubuntu 18.04.6 LTS (bionic) 3.1.2-2.1ubuntu1.4 rsync 3.1.2-2.1ubuntu1.4 Mar 25, 2022
rsync · Ubuntu 20.04 LTS (focal) 3.1.3-8ubuntu0.3 rsync 3.1.3-8ubuntu0.3 Mar 25, 2022
rsync · almalinux 8 3.1.3-14.el8 ALSA-2022:2201 May 11, 2022
rsync · amzn 2023 3.2.6-1.amzn2023.0.3 ALAS2023-2023-002 Feb 17, 2023
rsync · ol 8 0:3.1.3-14.el8_6.2 ELSA-2022-2201 May 19, 2022
rsync · ol 9 0:3.2.3-9.el9_0.1 ELSA-2022-4592 Jun 30, 2022
rsync · rocky 8 0:3.1.3-14.el8_6.2 RLSA-2022:2201 May 11, 2022
rsync-daemon · RHEL 8 0:3.1.3-14.el8_6.2 RHSA-2022:2201 May 11, 2022
rsync-daemon · RHEL 9 0:3.2.3-9.el9_0.1 RHSA-2022:4592 May 18, 2022
rsync-daemon · almalinux 8 3.1.3-14.el8 ALSA-2022:2201 May 11, 2022
rsync-daemon · amzn 2023 3.2.6-1.amzn2023.0.3 ALAS2023-2023-002 Feb 17, 2023
rsync-daemon · ol 8 0:3.1.3-14.el8_6.2 ELSA-2022-2201 May 19, 2022
rsync-daemon · ol 9 0:3.2.3-9.el9_0.1 ELSA-2022-4592 Jun 30, 2022
rsync-debuginfo · amzn 2023 3.2.6-1.amzn2023.0.3 ALAS2023-2023-002 Feb 17, 2023
rsync-debugsource · amzn 2023 3.2.6-1.amzn2023.0.3 ALAS2023-2023-002 Feb 17, 2023
zlib · Debian 11.6 (bullseye) 1:1.2.11.dfsg-2+deb11u1 DSA-5111-1 Apr 1, 2022
zlib · Debian 12.15 (bookworm) 1:1.2.11.dfsg-4 DEBIAN-CVE-2018-25032 Mar 25, 2022
zlib · Debian 13.5 (trixie) 1:1.2.11.dfsg-4 DEBIAN-CVE-2018-25032 Mar 25, 2022
zlib · Debian 14 1:1.2.11.dfsg-4 DEBIAN-CVE-2018-25032 Mar 25, 2022
zlib · RHEL 8 0:1.2.11-18.el8_5 RHSA-2022:1642 Apr 28, 2022
zlib · RHEL 9 0:1.2.11-31.el9_0.1 RHSA-2022:4584 May 17, 2022
zlib · almalinux 8 1.2.11-18.el8_5 ALSA-2022:1642 Apr 28, 2022
zlib · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
zlib · ol 8 0:1.2.11-18.el8_5 ELSA-2022-1642 Apr 28, 2022
zlib · ol 9 0:1.2.11-31.el9_0.1 ELSA-2022-4584 Jun 30, 2022
zlib · rocky 8 0:1.2.11-18.el8_5 RLSA-2022:1642 Apr 28, 2022
zlib-debuginfo · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
zlib-debugsource · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
zlib-devel · RHEL 8 0:1.2.11-18.el8_5 RHSA-2022:1642 Apr 28, 2022
zlib-devel · RHEL 9 0:1.2.11-31.el9_0.1 RHSA-2022:4584 May 17, 2022
zlib-devel · almalinux 8 1.2.11-18.el8_5 ALSA-2022:1642 Apr 28, 2022
zlib-devel · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
zlib-devel · ol 8 0:1.2.11-18.el8_5 ELSA-2022-1642 Apr 28, 2022
zlib-devel · ol 9 0:1.2.11-31.el9_0.1 ELSA-2022-4584 Jun 30, 2022
zlib-static · RHEL 8 0:1.2.11-18.el8_5 RHSA-2022:1642 Apr 28, 2022
zlib-static · RHEL 9 0:1.2.11-31.el9_0.1 RHSA-2022:4584 May 17, 2022
zlib-static · almalinux 8 1.2.11-18.el8_5 ALSA-2022:1642 Apr 28, 2022
zlib-static · amzn 2023 1.2.11-33.amzn2023.0.4 ALAS2023-2023-003 Feb 17, 2023
zlib-static · ol 8 0:1.2.11-18.el8_5 ELSA-2022-1642 Apr 28, 2022
zlib-static · ol 9 0:1.2.11-31.el9_0.1 ELSA-2022-4584 Jun 30, 2022
zlib1g · Ubuntu 18.04.6 LTS (bionic) 1:1.2.11.dfsg-0ubuntu2.1 zlib1g 1:1.2.11.dfsg-0ubuntu2.1 Mar 25, 2022
zlib1g · Ubuntu 20.04 LTS (focal) 1:1.2.11.dfsg-2ubuntu1.3 zlib1g 1:1.2.11.dfsg-2ubuntu1.3 Mar 25, 2022
zlib1g · Ubuntu 22.04.1 LTS (jammy) 1:1.2.11.dfsg-2ubuntu9 zlib1g 1:1.2.11.dfsg-2ubuntu9 Mar 25, 2022
No fix yet
Python 3.7 (Windows apps) No fix yet no-fix n/a
Python 3.8 (Windows apps) No fix yet no-fix n/a

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