Vulnerability Name:

CVE-2020-8295 (CCN-195673)

Assigned:2020-10-03
Published:2020-10-03
Updated:2021-02-02
Summary:A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-8295

Source: XF
Type: UNKNOWN
nextcloud-cve20208295-dos(195673)

Source: MISC
Type: Exploit, Third Party Advisory
https://hackerone.com/reports/812754

Source: CCN
Type: NC-SA-2021-003
Denial of Service by requesting to reset a password

Source: MISC
Type: Vendor Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2021-003

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-8295

Vulnerable Configuration:Configuration 1:
  • cpe:/a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* (Version < 20.0.0)

  • Configuration CCN 1:
  • cpe:/a:nextcloud:nextcloud_server:19.0.0:-:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:93630
    P
    (Important)
    2022-07-21
    oval:org.opensuse.security:def:100343
    P
    (Important)
    2021-10-26
    oval:org.opensuse.security:def:110978
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:103101
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:35508
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:96411
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:111486
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:11104
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:109758
    P
    Security update for nextcloud (Important)
    2021-07-20
    oval:org.opensuse.security:def:11176
    P
    Security update for nextcloud (Moderate)
    2021-02-11
    oval:org.opensuse.security:def:109792
    P
    Security update for nextcloud (Moderate)
    2021-02-11
    oval:org.opensuse.security:def:103135
    P
    Security update for nextcloud (Moderate)
    2021-02-11
    oval:org.opensuse.security:def:96445
    P
    Security update for nextcloud (Moderate)
    2021-02-11
    oval:org.opensuse.security:def:111211
    P
    Security update for nextcloud (Moderate)
    2021-02-08
    BACK
    nextcloud nextcloud server *
    nextcloud nextcloud server 19.0.0 -