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MozillaCVE-2020-6829

HistoryOct 28, 2020 - 12:15 p.m.

CVE-2020-6829

2020-10-2812:15:12

mozilla

web.nvd.nist.gov

228

cve-2020-6829

ec scalar point multiplication

firefox

nvd

vulnerability

signature generation

nonce leakage

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

5.5

Confidence

Low

EPSS

0.002

Percentile

57.4%

JSON

When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

Affected configurations

Nvd

Vulners

Node

mozillafirefoxRange<80.0-

mozillafirefoxRange<80.0android

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

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

CNA Affected

[
  {
    "vendor": "Mozilla",
    "product": "Firefox",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "80",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Mozilla",
    "product": "Firefox for Android",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "80",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]