libapache2-mod-security2: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx
CVE-2025-47947 is fixed in 8 products on 1 platform, first by DEBIAN-CVE-2025-47947, released May 21, 2025. It is not reported as exploited. Patch Radar priority: High.
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case (in stable released versions): when the payload's content type is `application/json`, and there is at least one rule which does a `sanitiseMatchedBytes` action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| apache2-mod_security2 · opensuse-leap 15.6 | 2.9.4-150400.3.9.1 | SUSE-SU-2025:02028-1 | Jun 19, 2025 |
| apache2-mod_security2 · sles 15.6 | 2.9.4-150400.3.9.1 | SUSE-SU-2025:02028-1 | Jun 19, 2025 |
| apache2-mod_security2 · sles 15.7 | 2.9.4-150400.3.9.1 | SUSE-SU-2025:02028-1 | Jun 19, 2025 |
| libapache2-mod-security2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.2-1ubuntu0.1~esm2 | libapache2-mod-security2 2.9.2-1ubuntu0.1~esm2 | Jun 2, 2025 |
| libapache2-mod-security2 · Ubuntu 20.04 LTS (focal) | 2.9.3-1ubuntu0.1+esm1 | libapache2-mod-security2 2.9.3-1ubuntu0.1+esm1 | Jun 2, 2025 |
| libapache2-mod-security2 · Ubuntu 22.04.1 LTS (jammy) | 2.9.5-1ubuntu0.1~esm2 | libapache2-mod-security2 2.9.5-1ubuntu0.1~esm2 | Jun 2, 2025 |
| libapache2-mod-security2 · Ubuntu 24.04.5 LTS (noble) | 2.9.7-1ubuntu0.24.04.1~esm1 | libapache2-mod-security2 2.9.7-1ubuntu0.24.04.1~esm1 | Jun 2, 2025 |
| libapache2-mod-security2 · Ubuntu 24.10 (oracular) | 2.9.7-1ubuntu0.24.10.1 | libapache2-mod-security2 2.9.7-1ubuntu0.24.10.1 | Jan 16, 2026 |
| libapache2-mod-security2 · Ubuntu 25.04 (plucky) | 2.9.8-1.1ubuntu0.1 | libapache2-mod-security2 2.9.8-1.1ubuntu0.1 | Jan 16, 2026 |
| mod_security · RHEL 8 | 0:2.9.6-2.el8_10 | RHSA-2025:8844 | Jun 11, 2025 |
| mod_security · RHEL 9 | 0:2.9.6-2.el9_6 | RHSA-2025:8837 | Jun 11, 2025 |
| mod_security · almalinux 8 | 2.9.6-2.el8_10 | ALSA-2025:8844 | Jun 11, 2025 |
| mod_security · almalinux 9 | 2.9.6-2.el9_6 | ALSA-2025:8837 | Jun 11, 2025 |
| mod_security · amzn 2023 | 2.9.10-1.amzn2023.0.1 | ALAS2023-2025-1026 | Jun 18, 2025 |
| mod_security · ol 8 | 0:2.9.6-2.el8_10 | ELSA-2025-8844 | Jun 11, 2025 |
| mod_security · ol 9 | 0:2.9.6-2.el9_6 | ELSA-2025-8837 | Jun 11, 2025 |
| mod_security · rocky 8 | 0:2.9.6-2.el8_10 | RLSA-2025:8844 | Jul 29, 2025 |
| mod_security · rocky 9 | 0:2.9.6-2.el9_6 | RLSA-2025:8837 | Oct 4, 2025 |
| mod_security-debuginfo · amzn 2023 | 2.9.10-1.amzn2023.0.1 | ALAS2023-2025-1026 | Jun 18, 2025 |
| mod_security-debugsource · amzn 2023 | 2.9.10-1.amzn2023.0.1 | ALAS2023-2025-1026 | Jun 18, 2025 |
| mod_security-mlogc · RHEL 8 | 0:2.9.6-2.el8_10 | RHSA-2025:8844 | Jun 11, 2025 |
| mod_security-mlogc · RHEL 9 | 0:2.9.6-2.el9_6 | RHSA-2025:8837 | Jun 11, 2025 |
| mod_security-mlogc · almalinux 8 | 2.9.6-2.el8_10 | ALSA-2025:8844 | Jun 11, 2025 |
| mod_security-mlogc · almalinux 9 | 2.9.6-2.el9_6 | ALSA-2025:8837 | Jun 11, 2025 |
| mod_security-mlogc · amzn 2023 | 2.9.10-1.amzn2023.0.1 | ALAS2023-2025-1026 | Jun 18, 2025 |
| mod_security-mlogc · ol 8 | 0:2.9.6-2.el8_10 | ELSA-2025-8844 | Jun 11, 2025 |
| mod_security-mlogc · ol 9 | 0:2.9.6-2.el9_6 | ELSA-2025-8837 | Jun 11, 2025 |
| mod_security-mlogc-debuginfo · amzn 2023 | 2.9.10-1.amzn2023.0.1 | ALAS2023-2025-1026 | Jun 18, 2025 |
| modsecurity-apache · Debian 11.6 (bullseye) | 2.9.3-3+deb11u3 | DLA-4192-1 | May 29, 2025 |
| modsecurity-apache · Debian 12.15 (bookworm) | 2.9.7-1+deb12u1 | DSA-5940-1 | Jun 8, 2025 |
| modsecurity-apache · Debian 13.5 (trixie) | 2.9.9-1 | DEBIAN-CVE-2025-47947 | May 21, 2025 |
| modsecurity-apache · Debian 14 | 2.9.9-1 | DEBIAN-CVE-2025-47947 | May 21, 2025 |
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