Nextcloud Server up to 12.0.2 Authentication 2FA 7pk security
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.2 | $0-$5k | 0.00 |
A vulnerability was found in Nextcloud Server up to 12.0.2 (Cloud Software). It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component Authentication. The manipulation with an unknown input leads to a 7pk security vulnerability (2FA). The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect confidentiality. The summary by CVE is:
Improper Authentication in Nextcloud Server prior to version 12.0.3 would allow an attacker that obtained user credentials to bypass the 2 Factor Authentication.
The bug was discovered 08/03/2018. The weakness was published 08/12/2018 (Website). The advisory is shared at nextcloud.com. This vulnerability is known as CVE-2018-3775 since 12/27/2017. The attack can be launched remotely. The requirement for exploitation is a single authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1211 for this issue.
The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13234 (Nextcloud Server Improper Authentication Vulnerability (NC-SA-2018-007)).
Upgrading to version 12.0.3 eliminates this vulnerability.
Similar entry is available at 122786.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.5VulDB Meta Temp Score: 6.4
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Name: 2FAClass: 7pk security / 2FA
CWE: CWE-254
ATT&CK: T1211
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Nextcloud Server 12.0.3
Timeline
12/27/2017 🔍08/03/2018 🔍
08/12/2018 🔍
08/12/2018 🔍
08/13/2018 🔍
03/15/2020 🔍
Sources
Advisory: nextcloud.comStatus: Not defined
Confirmation: 🔍
CVE: CVE-2018-3775 (🔍)
See also: 🔍
Entry
Created: 08/13/2018 07:58Updated: 03/15/2020 08:22
Changes: 08/13/2018 07:58 (66), 03/15/2020 08:22 (2)
Complete: 🔍
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