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[email protected]CVE-2020-12415

HistoryJul 09, 2020 - 3:15 p.m.

CVE-2020-12415

2020-07-0915:15:11

CWE-276

[email protected]

web.nvd.nist.gov

166

cve

nvd

security

firefox

appcache

vulnerability

manifest url

subdirectory

web browser

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

50.5%

JSON

When “%2F” was present in a manifest URL, Firefox’s AppCache behavior may have become confused and allowed a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory. This vulnerability affects Firefox < 78.

Affected configurations

Vulners

NVD

Node

mozillafirefoxRange≤78

VendorProductVersionCPE
mozillafirefox*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
mozilla	firefox	*	cpe:2.3:a:mozilla:firefox::::::::

CNA Affected

[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "78",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]