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[email protected]CVE-2021-44790

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

CVE-2021-44790

2021-12-2012:15:07

CWE-787

[email protected]

web.nvd.nist.gov

5734

cve-2021-44790

buffer overflow

mod_lua

multipart parser

http server security

nvd

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.7 High

AI Score

Confidence

High

0.088 Low

EPSS

Percentile

94.6%

JSON

A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.

Affected configurations

Vulners

NVD

Node

apacheapache_http_serverRange≤2.4.51

CPENameOperatorVersion
apache:http_serverapache http serverle2.4.51

CPE	Name	Operator	Version
apache:http_server	apache http server	le	2.4.51

CNA Affected

[
  {
    "vendor": "Apache Software Foundation",
    "product": "Apache HTTP Server",
    "versions": [
      {
        "version": "Apache HTTP Server 2.4",
        "status": "affected",
        "lessThanOrEqual": "2.4.51",
        "versionType": "custom"
      }
    ]
  }
]