Overview
- Description
- The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.
- Source
- security@apache.org
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 5
- Impact score
- 2.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
- nvd@nist.gov
- CWE-20
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E1F45B27-504B-4202-87B8-BD3B094003F1"
},
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F2FB2B98-DFD2-420A-8A7F-9B288651242F"
},
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.19:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2AE538EE-7152-4DB5-AE45-614494CB7B95"
},
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B803D25B-0A19-4569-BA05-09D58F33917C"
},
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.21:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BE253E49-9A56-49C8-B1D8-E23BB3D5D1D7"
},
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.22:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DE5A73E5-1A04-420B-92B2-B90FD970005C"
},
{
"criteria": "cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8510442C-212F-4013-85FA-E0AB59F6F2C6"
}
],
"operator": "OR"
}
]
}
]