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{
"schema_version": "1.7.0",
"id": "USN-4113-2",
"summary": "apache2 regression",
"details": "USN-4113-1 fixed vulnerabilities in the Apache HTTP server.\nUnfortunately, that update introduced a regression when proxying\nbalancer manager connections in some configurations. This update\nfixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Stefan Eissing discovered that the HTTP/2 implementation in Apache\n did not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in\n some situations. A remote attacker could use this to cause a denial\n of service (daemon crash). This issue only affected Ubuntu 18.04 LTS\n and Ubuntu 19.04. (CVE-2019-0197)\n\n Craig Young discovered that a memory overwrite error existed in\n Apache when performing HTTP/2 very early pushes in some situations. A\n remote attacker could use this to cause a denial of service (daemon\n crash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04.\n (CVE-2019-10081)\n\n Craig Young discovered that a read-after-free error existed in the\n HTTP/2 implementation in Apache during connection shutdown. A remote\n attacker could use this to possibly cause a denial of service (daemon\n crash) or possibly expose sensitive information. This issue only\n affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10082)\n\n Matei Badanoiu discovered that the mod_proxy component of\n Apache did not properly filter URLs when reporting errors in some\n configurations. A remote attacker could possibly use this issue to\n conduct cross-site scripting (XSS) attacks. (CVE-2019-10092)\n\n Daniel McCarney discovered that mod_remoteip component of Apache\n contained a stack buffer overflow when parsing headers from a trusted\n intermediary proxy in some situations. A remote attacker controlling a\n trusted proxy could use this to cause a denial of service or possibly\n execute arbitrary code. This issue only affected Ubuntu 19.04.\n (CVE-2019-10097)\n\n Yukitsugu Sasaki discovered that the mod_rewrite component in Apache\n was vulnerable to open redirects in some situations. A remote attacker\n could use this to possibly expose sensitive information or bypass\n intended restrictions. (CVE-2019-10098)\n\n Jonathan Looney discovered that the HTTP/2 implementation in Apache did\n not properly limit the amount of buffering for client connections in\n some situations. A remote attacker could use this to cause a denial\n of service (unresponsive daemon). This issue only affected Ubuntu\n 18.04 LTS and Ubuntu 19.04. (CVE-2019-9517)\n",
"aliases": [],
"upstream": [],
"related": [],
"published": "2019-09-17T12:24:05Z",
"modified": "2026-04-22T07:36:37Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.13?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.18-2ubuntu3.13"
}
]
}
],
"versions": [
"2.4.12-2ubuntu2",
"2.4.17-1ubuntu1",
"2.4.17-2ubuntu1",
"2.4.17-3ubuntu1",
"2.4.18-1ubuntu1",
"2.4.18-2ubuntu1",
"2.4.18-2ubuntu2",
"2.4.18-2ubuntu3",
"2.4.18-2ubuntu3.1",
"2.4.18-2ubuntu3.2",
"2.4.18-2ubuntu3.3",
"2.4.18-2ubuntu3.4",
"2.4.18-2ubuntu3.5",
"2.4.18-2ubuntu3.7",
"2.4.18-2ubuntu3.8",
"2.4.18-2ubuntu3.9",
"2.4.18-2ubuntu3.10",
"2.4.18-2ubuntu3.12"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.18-2ubuntu3.13"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.18-2ubuntu3.13"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.18-2ubuntu3.13"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.18-2ubuntu3.13"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.18-2ubuntu3.13"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.18-2ubuntu3.13"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.11?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.29-1ubuntu4.11"
}
]
}
],
"versions": [
"2.4.27-2ubuntu3",
"2.4.29-1ubuntu1",
"2.4.29-1ubuntu2",
"2.4.29-1ubuntu3",
"2.4.29-1ubuntu4",
"2.4.29-1ubuntu4.1",
"2.4.29-1ubuntu4.2",
"2.4.29-1ubuntu4.3",
"2.4.29-1ubuntu4.4",
"2.4.29-1ubuntu4.5",
"2.4.29-1ubuntu4.6",
"2.4.29-1ubuntu4.7",
"2.4.29-1ubuntu4.8",
"2.4.29-1ubuntu4.10"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.29-1ubuntu4.11"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.29-1ubuntu4.11"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.29-1ubuntu4.11"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.29-1ubuntu4.11"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.29-1ubuntu4.11"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.29-1ubuntu4.11"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": []
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4113-2"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/1842701"
}
]
}