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MozillaCVE-2020-12415

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

CVE-2020-12415

2020-07-0915:15:11

CWE-276

mozilla

web.nvd.nist.gov

174

cve

nvd

security

firefox

appcache

vulnerability

manifest url

subdirectory

web browser

CVSS2

4.3

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

CVSS3

6.5

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

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

50.4%

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

Nvd

Vulners

Node

mozillafirefoxRange<78.0

Node

opensuseleapMatch15.1

opensuseleapMatch15.2

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"
      }
    ]
  }
]