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HackeroneCVE-2020-8173

HistoryNov 02, 2020 - 9:15 p.m.

CVE-2020-8173

2020-11-0221:15:34

CWE-311

CWE-310

hackerone

web.nvd.nist.gov

nvd

nextcloud

encryption

cve-2020-8173

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

2.2

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.5

Confidence

High

EPSS

0.001

Percentile

21.2%

JSON

A too small set of random characters being used for encryption in Nextcloud Server 18.0.4 allowed decryption in shorter time than intended.

Affected configurations

Nvd

Vulners

Node

nextcloudnextcloud_serverRange<17.0.7

nextcloudnextcloud_serverRange18.0.0–18.0.5

VendorProductVersionCPE
nextcloudnextcloud_server*cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
nextcloud	nextcloud_server	*	cpe:2.3:a:nextcloud:nextcloud_server::::::::

CNA Affected

[
  {
    "product": "Nextcloud Server",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "18.0.4"
      }
    ]
  }
]

References

hackerone.com/reports/852841

nextcloud.com/security/advisory/?id=NC-SA-2020-023

Social References

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

2.2

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.5

Confidence

High

EPSS

0.001

Percentile

21.2%

JSON

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