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[email protected]CVE-2021-44224

HistoryDec 20, 2021 - 12:15 p.m.

CVE-2021-44224

2021-12-2012:15:07

CWE-476

[email protected]

web.nvd.nist.gov

1936

cve-2021-44224

crafted uri

crash

ssrf

apache http server

security vulnerability

nvd

6.4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:P/A:P

8.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

8.9 High

AI Score

Confidence

High

0.307 Low

EPSS

Percentile

97.0%

JSON

A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).

Affected configurations

Vulners

NVD

Node

apacheapache_http_serverRange≤2.4.7

CPENameOperatorVersion
apache:http_serverapache http serverlt2.4.52

CPE	Name	Operator	Version
apache:http_server	apache http server	lt	2.4.52

CNA Affected

[
  {
    "product": "Apache HTTP Server",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThan": "Apache HTTP Server 2.4*",
        "status": "affected",
        "version": "2.4.7",
        "versionType": "custom"
      }
    ]
  }
]