{
  "cveId": "CVE-2021-34798",
  "url": "https://patchblox.com/security/cve/CVE-2021-34798",
  "summary": "CVE-2021-34798 is fixed in 19 products on 1 platform, first by apache2 2.4.29-1ubuntu4.17, released September 16, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "httpd-filesystem: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.\n\nSecurity Fix(es...",
  "description": "The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.\n\nSecurity Fix(es):\n\n* httpd: NULL pointer dereference via malformed requests (CVE-2021-34798)\n\n* httpd: Out-of-bounds write in ap_escape_quotes() via malicious input (CVE-2021-39275)\n\nFor 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.",
  "published": "2021-09-16T08:15:00Z",
  "severity": "Moderate",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.64509,
  "epssPercentile": 0.99244,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "apache2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.29-1ubuntu4.17",
      "fix": "apache2 2.4.29-1ubuntu4.17",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-apache2-2.4.29-1ubuntu4.17",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "apache2 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-apache2-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-bin",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.29-1ubuntu4.17",
      "fix": "apache2-bin 2.4.29-1ubuntu4.17",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-apache2-bin-2.4.29-1ubuntu4.17",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-bin",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "apache2-bin 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-apache2-bin-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-data",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.29-1ubuntu4.17",
      "fix": "apache2-data 2.4.29-1ubuntu4.17",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-apache2-data-2.4.29-1ubuntu4.17",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-data",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "apache2-data 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-apache2-data-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-suexec-custom",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.29-1ubuntu4.17",
      "fix": "apache2-suexec-custom 2.4.29-1ubuntu4.17",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-apache2-suexec-custom-2.4.29-1ubuntu4.17",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-suexec-custom",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "apache2-suexec-custom 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-apache2-suexec-custom-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-suexec-pristine",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.29-1ubuntu4.17",
      "fix": "apache2-suexec-pristine 2.4.29-1ubuntu4.17",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-apache2-suexec-pristine-2.4.29-1ubuntu4.17",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-suexec-pristine",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "apache2-suexec-pristine 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-apache2-suexec-pristine-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-utils",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.29-1ubuntu4.17",
      "fix": "apache2-utils 2.4.29-1ubuntu4.17",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-apache2-utils-2.4.29-1ubuntu4.17",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "apache2-utils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "apache2-utils 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-apache2-utils-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "rocky 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B714\u002B5ec56ee8",
      "fix": "RLSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-devel",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-devel",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-filesystem",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-filesystem",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-filesystem",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-manual",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-manual",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-manual",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-tools",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-tools",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-tools",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libapache2-mod-md",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "libapache2-mod-md 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libapache2-mod-md-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libapache2-mod-proxy-uwsgi",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.41-4ubuntu3.5",
      "fix": "libapache2-mod-proxy-uwsgi 2.4.41-4ubuntu3.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libapache2-mod-proxy-uwsgi-2.4.41-4ubuntu3.5",
      "released": "2021-09-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_http2",
      "release": "RHEL 8",
      "fixedVersion": "0:1.15.7-3.module\u002Bel8.4.0\u002B8625\u002Bd397f3da",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_http2",
      "release": "ol 8",
      "fixedVersion": "0:1.15.7-3.module\u002Bel8.4.0\u002B20024\u002Bb87b2deb",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_http2",
      "release": "rocky 8",
      "fixedVersion": "0:1.15.7-3.module\u002Bel8.4.0\u002B553\u002B7a69454b",
      "fix": "RLSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_ldap",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_ldap",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_ldap",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_md",
      "release": "RHEL 8",
      "fixedVersion": "1:2.0.8-8.module\u002Bel8.3.0\u002B6814\u002B67d1e611",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_md",
      "release": "almalinux 8",
      "fixedVersion": "1:2.0.8-8.module_el8.6.0\u002B2872\u002Bfe0ff7aa",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_md",
      "release": "ol 8",
      "fixedVersion": "1:2.0.8-8.module\u002Bel8.5.0\u002B20475\u002B4f6a8fd5",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_md",
      "release": "rocky 8",
      "fixedVersion": "1:2.0.8-8.module\u002Bel8.5.0\u002B695\u002B1fa8055e",
      "fix": "RLSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_proxy_html",
      "release": "RHEL 8",
      "fixedVersion": "1:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_proxy_html",
      "release": "almalinux 8",
      "fixedVersion": "1:2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_proxy_html",
      "release": "ol 8",
      "fixedVersion": "1:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_session",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_session",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_session",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_ssl",
      "release": "RHEL 8",
      "fixedVersion": "1:2.4.37-43.module\u002Bel8.5.0\u002B14370\u002B51c6d843.2",
      "fix": "RHSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0891",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "mod_ssl",
      "release": "almalinux 8",
      "fixedVersion": "1:2.4.37-43.module_el8.5.0\u002B2630\u002B51c6d843.2.alma",
      "fix": "ALSA-2022:0891",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0891",
      "released": "2022-03-15T09:10:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_ssl",
      "release": "ol 8",
      "fixedVersion": "1:2.4.37-43.0.2.module\u002Bel8.5.0\u002B20518\u002Bd9453e37.2",
      "fix": "ELSA-2022-0891",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0891",
      "released": "2022-03-16T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}