ShovellerH1:145409Nextcloud: help.nextcloud.com: Known DoS condition (null pointer deref) in Nginx running
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.019 Low
EPSS
Percentile
86.8%
The https://help.nextcloud.com sub-site is running Nginx/1.10.0 which is vuln to a known issue (CVE-2016-4450) which allows a remote malformed HTTP request to cause the Nginx process to crash.
DoS testing is mentioned as not requested, but if you know of an issue give it a go …
You can determine the version running by requesting the IP of the site and getting the HTTP 301, eg: https://88.198.160.135
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4450
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.019 Low
EPSS
Percentile
86.8%