Lucene search

[email protected]CVE-2021-21707

HistoryNov 29, 2021 - 7:15 a.m.

CVE-2021-21707

2021-11-2907:15:06

CWE-159

[email protected]

web.nvd.nist.gov

1116

php

xml

parsing

vulnerability

cve-2021-21707

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

49.4%

JSON

In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.

Affected configurations

NVD

Node

phpphpRange7.3.0–7.3.33

phpphpRange7.4.0–7.4.26

phpphpRange8.0.0–8.0.13

Node

netappclustered_data_ontapMatch-

Node

debiandebian_linuxMatch10.0

debiandebian_linuxMatch11.0

Node

tenabletenable.scRange<5.21.0

CNA Affected

[
  {
    "vendor": "PHP Group",
    "product": "PHP",
    "versions": [
      {
        "version": "7.3.x",
        "status": "affected",
        "lessThan": "7.3.33",
        "versionType": "custom"
      },
      {
        "version": "7.4.x",
        "status": "affected",
        "lessThan": "7.4.26",
        "versionType": "custom"
      },
      {
        "version": "8.0.X",
        "status": "affected",
        "lessThan": "8.0.13",
        "versionType": "custom"
      }
    ]
  }
]