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SnykCVE-2020-7766

HistoryNov 10, 2020 - 4:15 p.m.

CVE-2020-7766

2020-11-1016:15:14

CWE-1321

snyk

web.nvd.nist.gov

cve

2020-7766

package

json-ptr

prototype pollution

security issue

nvd

CVSS2

7.5

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

CVSS3

9.8

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

AI Score

9.1

Confidence

High

EPSS

0.009

Percentile

82.6%

JSON

This affects all versions of package json-ptr. The issue occurs in the set operation (https://flitbit.github.io/json-ptr/classes/_src_pointer_.jsonpointer.htmlset) when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check the key being set, leading to a prototype pollution.

Affected configurations

Nvd

Node

json-ptr_projectjson-ptrRange<2.0.0

VendorProductVersionCPE
json-ptr_projectjson-ptr*cpe:2.3:a:json-ptr_project:json-ptr:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
json-ptr_project	json-ptr	*	cpe:2.3:a:json-ptr_project:json-ptr::::::::

CNA Affected

[
  {
    "product": "json-ptr",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

References

github.com/flitbit/json-ptr/blob/master/src/util.ts%23L174

snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038396

snyk.io/vuln/SNYK-JS-JSONPTR-1016939

CVSS2

7.5

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

CVSS3

9.8

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

AI Score

9.1

Confidence

High

EPSS

0.009

Percentile

82.6%

JSON

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